Bug 2493988 (CVE-2026-13500) - CVE-2026-13500 antlr: ANTLR4: Remote code injection vulnerability
Summary: CVE-2026-13500 antlr: ANTLR4: Remote code injection vulnerability
Keywords:
Status: NEW
Alias: CVE-2026-13500
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-06-28 15:01 UTC by OSIDB Bzimport
Modified: 2026-07-01 18:57 UTC (History)
4 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Embargoed:

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Description OSIDB Bzimport 2026-06-28 15:01:41 UTC 
A weakness has been identified in antlr ANTLR4 up to 4.13.2. Affected is an unknown function of the file tool/src/org/antlr/v4/codegen/model/OutputFile.java of the component Grammar Action Block Handler. Executing a manipulation can lead to code injection. The attack may be launched remotely. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.
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