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use after free in SMB connection reuse

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

cve-program · CVE-2026-3805

Published

When doing a second SMB request to the same host again, curl would wrongly use a data pointer pointing into already freed memory.

Read the publisher's advisory

Affected versions, risk and source history

cve-program · CVE-2026-3805

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": "8.13.0",
                            "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": "f4831daa9b2a97e8a2921d6b62cc4dfdd0d8646e",
                            "status": "affected",
                            "versionType": "git",
                            "lessThan": "e090be9f73a7a71459ef678c7cc4b1f75e3ea883"
                        }
                    ],
                    "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"
                        }
                    ],
                    "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