CVE-2026-13503

A flaw was found in antlr ANTLR4. A remote attacker can exploit a path traversal vulnerability by manipulating the getImportedVocabFile function within the tokenVocab Grammar Option Handler component. This could allow unauthorized access to sensitive files and directories on the system. Mitigatio...

Directory Traversal

Overview Affected versions of this package are vulnerable to Directory Traversal via the getImportedVocabFile function in the tokenVocab Grammar Option Handler. An attacker can access arbitrary files on the system by supplying crafted input paths. Details A Directory Traversal attack also known a...

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/v4/parse/TokenVocabParser.java of the component tokenVocab Grammar Option Handler. The manipulation results in path traversal. The attack can be...

CVE-2026-13503: Improper Limitation of a Pathname to a Restricted Directory

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...