This page tracks the Debian fix status. The vulnerability itself is described on the main CVE page.
View CVE-2026-13503 →
DEBIAN-CVE-2026-13503
A vulnerability was detected in antlr ANTLR4 up to 4.13.2. Affected by this issue is the function getImportedVocabFile of the file tool/src/org/antlr/...
Original description
The description as published by the source.
A vulnerability was detected in antlr ANTLR4 up to 4.13.2. Affected by this issue is the function getImportedVocabFile of the file tool/src/org/antlr/v4/parse/TokenVocabParser.java of the component tokenVocab Grammar Option Handler. The manipulation results in path traversal. The attack can be executed remotely. The exploit is now public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
Source: OSV.dev (Open Source Vulnerabilities) OSV
Affected packages
Debian:12
antlr4
[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]
Debian:13
antlr4
[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]
Debian:14
antlr4
[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]
References
- advisory security-tracker.debian.org