CVE-2026-13500

HighCVSS 7.3/10Last modified Oct 25, 2026

Description

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.

Metrics

CVSS 3.1 7.3/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

Weakness enumeration

CWE-74 CWE-94

Affected software

No affected versions have been published.

Timeline

Published: Jun 28, 2026
Last modified: Oct 25, 2026
NVD status: Deferred

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