Improper Verification of Cryptographic Signature Affecting github.com/sigstore/gitsign/internal/git package, versions <0.16.0
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-GITHUBCOMSIGSTOREGITSIGNINTERNALGIT-17116454
- published1 Jun 2026
- disclosed15 May 2026
- creditbugbunny-research
Introduced: 15 May 2026
CVE-2026-44309 (opens in a new tab)How to fix?
Upgrade github.com/sigstore/gitsign/internal/git to version 0.16.0 or higher.
Overview
Affected versions of this package are vulnerable to Improper Verification of Cryptographic Signature in the verify process. An attacker can cause trust confusion by submitting a commit object with duplicate tree headers, resulting in different interpretations between git-core and go-git, and thereby passing signature verification on altered content.