CVE-2026-49478Published

Fulcio has OIDC Discovery Redirect Following Allows SSRF and JWKS Substitution for Meta-Issuer Paths, with Kubernetes Service-Account Token Leakage

cve-program · CVE-2026-49478

Published

fulcio

Vendor product

Original vendor version evidence · not evaluated as a NuGet range

{
                    "vendor": "sigstore",
                    "product": "fulcio",
                    "versions": [
                        {
                            "version": "< 1.8.6",
                            "status": "affected"
                        }
                    ]
                }

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

euvd · EUVD-2026-57859

Published

EUVD source date text has no stated timezone and is retained without inventing a UTC instant. Related bulletin membership is not an alias, common cause or applicability claim. A missing vector with a zero score is treated as unrated. Complete vendor/product and underlying source evidence remains in the original JSON.

Original publisher date fields

datePublished: Aug 13, 2026, 1:08:21 PM

dateUpdated: Aug 15, 2026, 3:14:47 AM

2 related source bulletins · separate from aliases

RHSA-2026:48913: Red Hat Security Advisory: RHACS 4.10.6 security and bug fix update

CVE-2026-13149 · CVE-2026-41889 · CVE-2026-49478 · CVE-2026-49978 · CVE-2026-50163 · CVE-2026-53492 · CVE-2026-59869

RHSA-2026:48872: Red Hat Security Advisory: RHACS 4.9.10 security and bug fix update

CVE-2026-13149 · CVE-2026-41889 · CVE-2026-49478 · CVE-2026-49978 · CVE-2026-50163 · CVE-2026-53488 · CVE-2026-53492 · CVE-2026-59869

No normalized affected-package data is projected for this source revision. The original publisher record may contain additional product and version evidence; this does not establish that a package is unaffected.

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

nvd · CVE-2026-49478

Published

NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON.

Source analysis status: Deferred

Weakness classifications: CWE-918

Original publisher date fields

published: 2026-08-13T13:19:09.790

lastModified: 2026-10-24T16:10:00.153

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

osv · GHSA-f5mr-q85p-6hh6

Published

github.com/sigstore/fulcio

SEMVER · introduced 0 → fixed 1.8.6

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

osv · GO-2026-5853

Published

github.com/sigstore/fulcio

SEMVER · introduced 0 → fixed 1.8.6

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