Medium 6.5Published Jul 14, 2026

CVE-2026-48816sigstore-js provides JavaScript libraries for interacting with Sigstore services.

Updated under an hour ago (2026-10-19 10:10 UTC)

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Exploited in the last 30 days

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.

CVSS: 6.5 MEDIUM (v3.1, NVD)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Weakness (CWE): CWE-345
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Not given
NVD analysis: Deferred
Record last updated: Jul 15, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

No affected products are listed yet.

References

https://github.com/sigstore/sigstore-js/commit/f074710a91ea9260a9ac2142345634579843a3cd
https://github.com/sigstore/sigstore-js/pull/1659
https://github.com/sigstore/sigstore-js/releases/tag/%40sigstore%2Fverify%403.1.1
https://github.com/sigstore/sigstore-js/security/advisories/GHSA-xgjw-pm74-86q4

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.