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Description

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.

PUBLISHED Reserved 2026-05-22 | Published 2026-07-14 | Updated 2026-07-14 | Assigner GitHub_M




MEDIUM: 6.5CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

Problem types

CWE-345: Insufficient Verification of Data Authenticity

Product status

< 3.1.1
affected

References

github.com/...ore-js/security/advisories/GHSA-xgjw-pm74-86q4

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

github.com/...ommit/f074710a91ea9260a9ac2142345634579843a3cd

github.com/...igstore-js/releases/tag/@sigstore/verify@3.1.1

cve.org (CVE-2026-48816)

nvd.nist.gov (CVE-2026-48816)

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