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token leak with redirect and netrc

cve-program · severity unknownCVSS unknownCheck source for fixed versionsKEV status unknown

cve-program · CVE-2026-3783

Published

When an OAuth2 bearer token is used for an HTTP(S) transfer, and that transfer performs a redirect to a second URL, curl could leak that token to the second hostname under some circumstances. If the hostname that the first request is redirected to has information in the used .netrc file, with either of the `machine` or `default` keywords, curl would pass on the bearer token set for the first host also to the second one.

Read the publisher's advisory

Affected versions, risk and source history

cve-program · CVE-2026-3783

Published

curl

Vendor product

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "curl",
                    "product": "curl",
                    "versions": [
                        {
                            "version": "7.33.0",
                            "status": "affected",
                            "versionType": "semver",
                            "lessThan": "8.14.2"
                        },
                        {
                            "version": "8.15.0",
                            "status": "affected",
                            "versionType": "semver",
                            "lessThan": "8.16.1"
                        },
                        {
                            "version": "8.17.0",
                            "status": "affected",
                            "versionType": "semver",
                            "lessThan": "8.19.0"
                        }
                    ],
                    "defaultStatus": "unaffected"
                }

curl

Vendor product

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "curl",
                    "product": "curl",
                    "versions": [
                        {
                            "version": "06c1bea72faabb6fad4b7ef818aafaa336c9a7aa",
                            "status": "affected",
                            "versionType": "git",
                            "lessThan": "e3d7401a32a46516c9e5ee877e613e62ed35bddc"
                        }
                    ],
                    "defaultStatus": "unaffected",
                    "repo": "https://github.com/curl/curl.git"
                }

curl

Vendor product

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "curl",
                    "product": "curl",
                    "versions": [
                        {
                            "version": "8.18.0",
                            "status": "affected"
                        },
                        {
                            "version": "8.17.0",
                            "status": "affected"
                        },
                        {
                            "version": "8.16.0",
                            "status": "affected"
                        },
                        {
                            "version": "8.15.0",
                            "status": "affected"
                        },
                        {
                            "version": "8.14.1",
                            "status": "affected"
                        },
                        {
                            "version": "8.14.0",
                            "status": "affected"
                        },
                        {
                            "version": "8.13.0",
                            "status": "affected"
                        },
                        {
                            "version": "8.12.1",
                            "status": "affected"
                        },
                        {
                            "version": "8.12.0",
                            "status": "affected"
                        },
                        {
                            "version": "8.11.1",
                            "status": "affected"
                        },
                        {
                            "version": "8.11.0",
                            "status": "affected"
                        },
                        {
                            "version": "8.10.1",
                            "status": "affected"
                        },
                        {
                            "version": "8.10.0",
                            "status": "affected"
                        },
                        {
                            "version": "8.9.1",
                            "status": "affected"
                        },
                        {
                            "version": "8.9.0",
                            "status": "affected"
                        },
                        {
                            "version": "8.8.0",
                            "status": "affected"
                        },
                        {
                            "version": "8.7.1",
                            "status": "affected"
                        },
                        {
                            "version": "8.7.0",
                            "status": "affected"
                        },
                        {
                            "version": "8.6.0",
                            "status": "affected"
                        },
                        {
                            "version": "8.5.0",
                            "status": "affected"
                        },
                        {
                            "version": "8.4.0",
                            "status": "affected"
                        },
                        {
                            "version": "8.3.0",
                            "status": "affected"
                        },
                        {
                            "version": "8.2.1",
                            "status": "affected"
                        },
                        {
                            "version": "8.2.0",
                            "status": "affected"
                        },
                        {
                            "version": "8.1.2",
                            "status": "affected"
                        },
                        {
                            "version": "8.1.1",
                            "status": "affected"
                        },
                        {
                            "version": "8.1.0",
                            "status": "affected"
                        },
                        {
                            "version": "8.0.1",
                            "status": "affected"
                        },
                        {
                            "version": "8.0.0",
                            "status": "affected"
                        },
                        {
                            "version": "7.88.1",
                            "status": "affected"
                        },
                        {
                            "version": "7.88.0",
                            "status": "affected"
                        },
                        {
                            "version": "7.87.0",
                            "status": "affected"
                        },
                        {
                            "version": "7.86.0",
                            "status": "affected"
                        },
                        {
                            "version": "7.85.0",
                            "status": "affected"
                        },
                        {
                            "version": "7.84.0",
                            "status": "affected"
                        },
                        {
                            "version": "7.83.1",
                            "status": "affected"
                        },
                        {
                            "version": "7.83.0",
                            "status": "affected"
                        },
                        {
                            "version": "7.82.0",
                            "status": "affected"
                        },
                        {
                            "version": "7.81.0",
                            "status": "affected"
                        },
                        {
                            "version": "7.80.0",
                            "status": "affected"
                        },
                        {
                            "version": "7.79.1",
                            "status": "affected"
                        },
                        {
                            "version": "7.79.0",
                            "status": "affected"
                        },
                        {
                            "version": "7.78.0",
                            "status": "affected"
                        },
                        {
                            "version": "7.77.0",
                            "status": "affected"
                        },
                        {
                            "version": "7.76.1",
                            "status": "affected"
                        },
                        {
                            "version": "7.76.0",
                            "status": "affected"
                        },
                        {
                            "version": "7.75.0",
                            "status": "affected"
                        },
                        {
                            "version": "7.74.0",
                            "status": "affected"
                        },
                        {
                            "version": "7.73.0",
                            "status": "affected"
                        },
                        {
                            "version": "7.72.0",
                            "status": "affected"
                        },
                        {
                            "version": "7.71.1",
                            "status": "affected"
                        },
                        {
                            "version": "7.71.0",
                            "status": "affected"
                        },
                        {
                            "version": "7.70.0",
                            "status": "affected"
                        },
                        {
                            "version": "7.69.1",
                            "status": "affected"
                        },
                        {
                            "version": "7.69.0",
                            "status": "affected"
                        },
                        {
                            "version": "7.68.0",
                            "status": "affected"
                        },
                        {
                            "version": "7.67.0",
                            "status": "affected"
                        },
                        {
                            "version": "7.66.0",
                            "status": "affected"
                        },
                        {
                            "version": "7.65.3",
                            "status": "affected"
                        },
                        {
                            "version": "7.65.2",
                            "status": "affected"
                        },
                        {
                            "version": "7.65.1",
                            "status": "affected"
                        },
                        {
                            "version": "7.65.0",
                            "status": "affected"
                        },
                        {
                            "version": "7.64.1",
                            "status": "affected"
                        },
                        {
                            "version": "7.64.0",
                            "status": "affected"
                        },
                        {
                            "version": "7.63.0",
                            "status": "affected"
                        },
                        {
                            "version": "7.62.0",
                            "status": "affected"
                        },
                        {
                            "version": "7.61.1",
                            "status": "affected"
                        },
                        {
                            "version": "7.61.0",
                            "status": "affected"
                        },
                        {
                            "version": "7.60.0",
                            "status": "affected"
                        },
                        {
                            "version": "7.59.0",
                            "status": "affected"
                        },
                        {
                            "version": "7.58.0",
                            "status": "affected"
                        },
                        {
                            "version": "7.57.0",
                            "status": "affected"
                        },
                        {
                            "version": "7.56.1",
                            "status": "affected"
                        },
                        {
                            "version": "7.56.0",
                            "status": "affected"
                        },
                        {
                            "version": "7.55.1",
                            "status": "affected"
                        },
                        {
                            "version": "7.55.0",
                            "status": "affected"
                        },
                        {
                            "version": "7.54.1",
                            "status": "affected"
                        },
                        {
                            "version": "7.54.0",
                            "status": "affected"
                        },
                        {
                            "version": "7.53.1",
                            "status": "affected"
                        },
                        {
                            "version": "7.53.0",
                            "status": "affected"
                        },
                        {
                            "version": "7.52.1",
                            "status": "affected"
                        },
                        {
                            "version": "7.52.0",
                            "status": "affected"
                        },
                        {
                            "version": "7.51.0",
                            "status": "affected"
                        },
                        {
                            "version": "7.50.3",
                            "status": "affected"
                        },
                        {
                            "version": "7.50.2",
                            "status": "affected"
                        },
                        {
                            "version": "7.50.1",
                            "status": "affected"
                        },
                        {
                            "version": "7.50.0",
                            "status": "affected"
                        },
                        {
                            "version": "7.49.1",
                            "status": "affected"
                        },
                        {
                            "version": "7.49.0",
                            "status": "affected"
                        },
                        {
                            "version": "7.48.0",
                            "status": "affected"
                        },
                        {
                            "version": "7.47.1",
                            "status": "affected"
                        },
                        {
                            "version": "7.47.0",
                            "status": "affected"
                        },
                        {
                            "version": "7.46.0",
                            "status": "affected"
                        },
                        {
                            "version": "7.45.0",
                            "status": "affected"
                        },
                        {
                            "version": "7.44.0",
                            "status": "affected"
                        },
                        {
                            "version": "7.43.0",
                            "status": "affected"
                        },
                        {
                            "version": "7.42.1",
                            "status": "affected"
                        },
                        {
                            "version": "7.42.0",
                            "status": "affected"
                        },
                        {
                            "version": "7.41.0",
                            "status": "affected"
                        },
                        {
                            "version": "7.40.0",
                            "status": "affected"
                        },
                        {
                            "version": "7.39.0",
                            "status": "affected"
                        },
                        {
                            "version": "7.38.0",
                            "status": "affected"
                        },
                        {
                            "version": "7.37.1",
                            "status": "affected"
                        },
                        {
                            "version": "7.37.0",
                            "status": "affected"
                        },
                        {
                            "version": "7.36.0",
                            "status": "affected"
                        },
                        {
                            "version": "7.35.0",
                            "status": "affected"
                        },
                        {
                            "version": "7.34.0",
                            "status": "affected"
                        },
                        {
                            "version": "7.33.0",
                            "status": "affected"
                        }
                    ],
                    "defaultStatus": "unaffected"
                }

Original source record · Cite this exact observation · Complete original publisher JSON

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Sources read 13 Nov 15:18 UTC · 274 of 275 readable · 273 fully read · documentation 469/469 current