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High7.8Red Hat Linux

High [CVE-2026-12252] Arbitrary Code Execution via Untrusted JAR File Loading

This high-severity Red Hat Linux advisory covers CVE-2026-12252.

CVE-2026-12252 Published Jul 4, 2026Updated by vendor Jul 4, 2026
Affected products & platforms
Red Hat LinuxUnclassified
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Summary

Arbitrary Code Execution via Untrusted JAR File Loading. Red Hat rates this important (CVSS 7.8).

Weakness: CWE-347.

Affected versions

No affected-version range was extracted from the source record. The vendor advisory is authoritative — check it before change work.

Official advisory · high-confidence parse· fetched 1 month ago·verify at source

Fixed versions

No fixed release is recorded yet. That does not prove no patch exists — confirm against the vendor advisory.

Official advisory · high-confidence parse· fetched 1 month ago·verify at source

Mitigation checklist

Recommended fix / mitigation
  • To mitigate this issue, users should ensure that only trusted Java Archive (JAR) files are processed by the `nltk` Stanford interface classes. Avoid loading JAR files from untrusted sources, as this vulnerability allows for arbitrary code execution. Implement strict input validation and source verification for any JAR files used with `nltk` to prevent the execution of malicious code.

Official advisory · high-confidence parse· fetched 1 month ago·verify at source

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