Insufficient Verification of Data Authenticity Affecting github.com/sigstore/sigstore-go/pkg/verify package, versions <1.2.0
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-GOLANG-GITHUBCOMSIGSTORESIGSTOREGOPKGVERIFY-17934729
- published10 Jul 2026
- disclosed9 Jul 2026
- creditUnknown
Introduced: 9 Jul 2026
CVE-2026-49834 (opens in a new tab)How to fix?
Upgrade github.com/sigstore/sigstore-go/pkg/verify to version 1.2.0 or higher.
Overview
Affected versions of this package are vulnerable to Insufficient Verification of Data Authenticity due to improper validation in the threshold counting process. An attacker can bypass multi-log threshold requirements by compromising a single log and forging multiple entries or verifications, thereby defeating the intended defense-in-depth mechanism.