Creation of Immutable Text Using String Concatenation The advisory has been revoked - it doesn't affect any version of package libgit2_1.9 (opens in a new tab)
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-RHEL10-LIBGIT219-21341141
- published21 Oct 2026
- disclosed20 Oct 2026
Introduced: 20 Oct 2026
NewCVE-2026-111758 (opens in a new tab)Amendment
The Red Hat security team deemed this advisory irrelevant for RHEL:10.
NVD Description
Note: Versions mentioned in the description apply only to the upstream libgit2_1.9 package and not the libgit2_1.9 package as distributed by RHEL.
markdown-it is a Markdown parser. From versions 14.1.0 to before 14.3.3, and 15.0.0 to before 15.0.3, a link reference definition whose label or title is never closed is O(n²) with default options. Continuation lines are pulled lazily with str += lineContent in src/rules_block/reference.ts, and the subsequent charCodeAt and slice calls flatten the V8 cons-string, copying everything collected so far; this runs before the rule decides the definition is invalid. No options are required to trigger it. This issue has been patched in versions 14.3.3 and 15.0.3.
References
- https://bugzilla.redhat.com/show_bug.cgi?id=2556455
- https://access.redhat.com/security/cve/CVE-2026-111758
- https://github.com/markdown-it/markdown-it/commit/48fbc465812c440020c663f040ab22deaf8f1eca
- https://github.com/markdown-it/markdown-it/commit/d99f48839d37af6fd8a2617516c43dab90755503
- https://github.com/markdown-it/markdown-it/releases/tag/14.3.3
- https://github.com/markdown-it/markdown-it/releases/tag/15.0.3
- https://github.com/markdown-it/markdown-it/security/advisories/GHSA-gfr2-rv44-r23c