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{"bugzilla": {"description": "sigstore-js: sigstore-js: Insufficient verification of data authenticity allows timestamp manipulation", "id": "2499688", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2499688"}, "csaw": false, "cvss3": {"cvss3_base_score": "6.5", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N", "status": "draft"}, "cwe": "CWE-345", "details": ["A flaw was found in sigstore-js. The software derives a transparency-log timestamp from tlogEntries[].integratedTime and uses it to validate certificate validity windows and satisfy timestampThreshold. For bundle v0.2, a transparency log (tlog) entry can be inclusion-proof-only, meaning the inclusion proof path does not cryptographically bind the integratedTime. This allows an attacker who can supply an untrusted bundle to influence time-based verification decisions by choosing an arbitrary integratedTime. This could lead to incorrect validation of certificate validity."], "mitigation": {"lang": "en:us", "value": "Upgrade to the latest sigstore-js release that addresses GHSA-xgjw-pm74-86q4."}, "name": "CVE-2026-48816", "public_date": "2026-07-01T19:58:28Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-48816\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-48816\nhttps://github.com/sigstore/sigstore-js/security/advisories/GHSA-xgjw-pm74-86q4"], "statement": "A flaw was found in sigstore-js. The tlog integratedTime field is not cryptographically bound in inclusionProof-only bundle v0.2 entries, allowing an attacker who supplies an untrusted bundle to influence time-based verification decisions.", "threat_severity": "Moderate"}