CVE-2026-48816
Medium
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.
SeverityMedium
CVSS6.5
Exploit probability—
Product@sigstore/verify
PublishedJul 14, 2026
First seenJul 14, 2026
Weakness typeCWE-345CWE-345
How to fix
Update
- @sigstore/verify3.1.1 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| @sigstore/verifynpm | 3.1.0 ≤ v < 3.1.1 | 3.1.1 |
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