CVE-2026-48816

MEDIUM6.5

sigstore-js: Insufficient Verification of Data Authenticity

Published Jul 14, 2026

Modified 1 months ago

Details

sigstore-js provides JavaScript libraries for interacting with Sigstore services. Prior to 3.1.1, @sigstore/verify derives a transparency-log timestamp from tlogEntries[].integratedTime for bundle v0.2 inclusionProof-only entries even though the inclusion proof path does not cryptographically bind integratedTime, allowing an attacker who can supply an untrusted bundle to influence certificate validity and timestampThreshold verification decisions. This issue is fixed in version 3.1.1.

References

WEB

https://github.com/sigstore/sigstore-js/commit/f074710a91ea9260a9ac2142345634579843a3cd

WEB

https://github.com/sigstore/sigstore-js/pull/1659

WEB

https://github.com/sigstore/sigstore-js/releases/tag/%40sigstore%2Fverify%403.1.1

WEB

https://github.com/sigstore/sigstore-js/security/advisories/GHSA-xgjw-pm74-86q4

ADVISORY

https://www.cve.org/CVERecord?id=CVE-2026-48816

CVSS Analysis