DEBIAN-CVE-2026-49478

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Source

https://security-tracker.debian.org/tracker/CVE-2026-49478

Import Source

https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-49478.json

JSON Data

https://api.test.osv.dev/v1/vulns/DEBIAN-CVE-2026-49478

Upstream

CVE-2026-49478

Published

2026-08-13T13:19:09Z

Modified

2026-09-10T08:47:28Z

Severity

8.7 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N CVSS Calculator

Summary

[none]

Details

Fulcio is a certificate authority for issuing code signing certificates for an OpenID Connect (OIDC) identity. Versions through 1.8.5 improperly follow cross-host redirects and attach Kubernetes ServiceAccount tokens during OIDC discovery, allowing a malicious or compromised issuer to perform blind SSRF, substitute and cache malicious JWKS keys, or disclose ServiceAccount tokens to external hosts. Version 1.8.6 blocks cross-host redirects, restricts token injection, and restricts local token loading. No known workarounds are available.

References

https://security-tracker.debian.org/tracker/CVE-2026-49478

Affected packages

Debian:13 / golang-github-sigstore-fulcio

Package

Name: golang-github-sigstore-fulcio
Purl: pkg:deb/debian/golang-github-sigstore-fulcio?arch=source&distro=trixie

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0 Unknown introduced version / All previous versions are affected

Affected versions

1.*

1.6.5-1

1.7.1-1

1.8.5-1

1.8.7-1

1.8.8-1

Ecosystem specific

{
    "urgency":  "not yet assigned"
}

Database specific

source

"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-49478.json"

Debian:14 / golang-github-sigstore-fulcio