Go/github.com/sigstore/timestamp-authority CVE-2025-66564: high 7.5, EPSS 0.44%

Sigstore Timestamp Authority allocates excessive memory during request parsing

Action: Upgrade github.com/sigstore/timestamp-authority to 2.0.3 or later.

go get github.com/sigstore/timestamp-authority@v2.0.3

Affected

Fixed versions

Sources

• osv: GHSA-4qg8-fj49-pxjh
• https://github.com/sigstore/timestamp-authority/security/advisories/GHSA-4qg8-fj49-pxjh
• https://nvd.nist.gov/vuln/detail/CVE-2025-66564
• https://github.com/sigstore/timestamp-authority/commit/0cae34e197d685a14904e0bad135b89d13b69421
• https://github.com/sigstore/timestamp-authority

CVE-2025-66564 · published 2025-12-05T18:19:00Z · modified 2026-09-10T03:50:31.413997158Z · JSON