Improper Verification of Cryptographic Signature Affecting kas package, versions [,5.3)
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-PYTHON-KAS-17670577
- published29 Jun 2026
- disclosed1 Jun 2026
- creditUnknown
Introduced: 1 Jun 2026
CVE-2026-47191 (opens in a new tab)How to fix?
Upgrade kas to version 5.3 or higher.
Overview
kas is a Setup tool for bitbake based projects
Affected versions of this package are vulnerable to Improper Verification of Cryptographic Signature in the process of checking out git repositories using commit IDs. An attacker can cause users to check out a malicious branch by creating a branch with the same name as a commit ID, potentially after taking over the referenced repository. This can lead to users working with untrusted or manipulated code by exploiting the lack of strong integrity validation for SHA-256 commit IDs.
Workaround
This vulnerability can be mitigated by validating cryptographically signed commits or tags, or by mirroring the repository to a trusted location and verifying its integrity before use.