CVE-2026-13503
Medium
Description
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.
SeverityMedium
CVSS5.3
Exploit probability—
ProductAntlr4
PublishedJun 28, 2026
First seenJun 28, 2026
Weakness typeCWE-22Path traversal
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| antlr antlr4 | 4.13.0, 4.13.1, 4.13.2 | — |
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