Fulcio allocates excessive memory during token parsing

These records connect through source-stated identifiers. Shared identifiers or dates alone do not establish shared exposure, root cause or applicability.

CVE-2025-66506 · Microsoft / collected KEV context

EUVD-2025-201293

GHSA-f83f-xpx7-ffpw

GO-2025-4193

cve-program · CVE-2025-66506

• https://github.com/sigstore/fulcio/security/advisories/GHSA-f83f-xpx7-ffpw
• https://github.com/sigstore/fulcio/commit/765a0e57608b9ef390e1eeeea8595b9054c63a5a

euvd · EUVD-2025-201293

• https://github.com/sigstore/fulcio/security/advisories/GHSA-f83f-xpx7-ffpw
• https://github.com/sigstore/fulcio/commit/765a0e57608b9ef390e1eeeea8595b9054c63a5a

nvd · CVE-2025-66506

• https://github.com/sigstore/fulcio/commit/765a0e57608b9ef390e1eeeea8595b9054c63a5a
• https://github.com/sigstore/fulcio/security/advisories/GHSA-f83f-xpx7-ffpw

osv · GHSA-f83f-xpx7-ffpw

• https://github.com/sigstore/fulcio/security/advisories/GHSA-f83f-xpx7-ffpw
• https://nvd.nist.gov/vuln/detail/CVE-2025-66506
• https://github.com/sigstore/fulcio/commit/765a0e57608b9ef390e1eeeea8595b9054c63a5a
• https://github.com/sigstore/fulcio

osv · GO-2025-4193

• https://github.com/sigstore/fulcio/security/advisories/GHSA-f83f-xpx7-ffpw
• https://nvd.nist.gov/vuln/detail/CVE-2025-66506
• https://github.com/sigstore/fulcio/commit/765a0e57608b9ef390e1eeeea8595b9054c63a5a

No related operational record is retained in the current change model.