CVE-2026-47191

LOWPre-NVD 0.0
0.0
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • No confirmed exploitation signals yet
CISA-KEV: Not listedEPSS: 0%CVSS: —Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

kas checks out SHA-like git branches as valid commits

Impact

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.

Patches

Commit https://github.com/siemens/kas/commit/4cb4a3d01122ffaec9feaae768a5814092f6f9b5 is resolving this issue. It has been released along with kas version 5.3.

Workarounds

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.

Credits

That such issues exist was already reported 3 years ago by Aditya Sirish A Yelgundhalli. At this point, no strong integrity checks for external repositories were in place in kas, and Siemens stated in the kas documentation that such attacks are considered out of scope. This hasn't changed for SHA-1 commits as explained above. If a repo provides SHA-256 commits, though, those may be considered strong enough (even if not providing authenticity proof) and can be affected by this issue.

CVSS v3
—
EG Score
0.0(none)
EPSS
5.0%
KEV
Not listed

Published

June 1, 2026

Last Modified

June 1, 2026

Vendor Advisories for CVE-2026-47191(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Affected Packages

(1 across 1 ecosystem)
PyPI(1)
PackageVulnerable rangeFixed inDependents
kas0.11.0 ... 5.2 (51 versions)5.3—

Data Freshness Timeline

(refreshed 0× in last 7d / 4× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-06-14 23:18 UTCEPSS rescore
  2. 2026-06-13 23:00 UTCEPSS rescore
  3. 2026-06-13 18:55 UTCEG score recompute
  4. 2026-06-12 23:12 UTCEPSS rescore
  5. 2026-06-01 14:49 UTCEG score recompute

Frequently asked(4)

What is CVE-2026-47191?
CVE-2026-47191 is a low vulnerability published on June 1, 2026. kas checks out SHA-like git branches as valid commits Impact 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…
When was CVE-2026-47191 disclosed?
CVE-2026-47191 was first published in the National Vulnerability Database on June 1, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-47191 actively exploited?
CVE-2026-47191 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 5.0% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
How do I remediate CVE-2026-47191?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-47191, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-47191

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