CVE-2026-48816

mediumCVSS 6.5covered by 1 sourcefirst seen 2026-07-14

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.

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Exploitation outlook

Low exploitation risk0.12% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 3% of all EPSS-scored CVEs.

Advisory coverage (1)

mediumCVE-2026-48816: sigstore-js provides JavaScript libraries for interacting with Sigstore services. Prior to 3.1…nvd · 2026-07-14

External references

NVD record for CVE-2026-48816

CVE.org record

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