{"cve":"CVE-2026-47191","nvd":{"published":"2026-08-14T17:18:15.410","modified":"2026-09-18T20:09:01.757","status":"Deferred","description":"kas is a setup tool for bitbake based projects. Prior to version 5.3, when relying solely on a git commit ID (SHA-1 or SHA-256) to qualify if a checkout of a repository is equivalent to the state validated while adding its commit ID to a kas configuration, users may be tricked to check out a branch of the same name from this repository. This implies that the referenced repository has been taken over by an attacker and modified to carry such a branch. SHA-1 commits may also be replaced by creating hash collisions, so the primary impact of this issue is on SHA-256 commit IDs. Version 5.3 fixes the issue. As a workaround, avoid relying solely on the commit ID for integrity validation of a repository that might become under control of a malicious 3rd party. If available, additional validate cryptographically signed commits or tags. Alternatively, mirror the repository to a save place, validate its integrity, and use this instead of the original one.","cvss_v4":{"vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:P/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N","score":2.1},"cvss_v3":null,"cwes":["CWE-347"],"references":["https://github.com/pypa/advisory-database/tree/main/vulns/kas/PYSEC-2026-2544.yaml","https://github.com/siemens/kas/commit/4cb4a3d01122ffaec9feaae768a5814092f6f9b5","https://github.com/siemens/kas/security/advisories/GHSA-qjwp-hrq6-r26r"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:48:17.459049833+00:00"},"epss":{"cve":"CVE-2026-47191","score":0.00246,"percentile":0.15893,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-qjwp-hrq6-r26r","url":"https://osv.dev/vulnerability/GHSA-qjwp-hrq6-r26r","summary":"kas checks out SHA-like git branches as valid commits","modified":"2026-08-15T05:20:18.298111362Z","packages":[{"ecosystem":"PyPI","name":"kas","purl":"pkg:pypi/kas","ranges":["<5.3"],"fixed":["5.3"]}]},{"id":"PYSEC-2026-2544","url":"https://osv.dev/vulnerability/PYSEC-2026-2544","summary":"kas checks out SHA-like git branches as valid commits","modified":"2026-07-13T16:32:00.136439246Z","packages":[{"ecosystem":"PyPI","name":"kas","purl":"pkg:pypi/kas","ranges":["<5.3"],"fixed":["5.3"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}