CVE-2026-13503
MEDIUMantlr ANTLR4 tokenVocab Grammar Option TokenVocabParser.java getImportedVocabFile path traversal
Title source: cnaDescription
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.
References (5)
Core 5
Core References
Vdb Entry, Technical Description vdb-entry
technical-description
VDB-374497 | antlr ANTLR4 tokenVocab Grammar Option TokenVocabParser.java getImportedVocabFile path traversal
https://vuldb.com/vuln/374497
Signature, Permissions Required signature
permissions-required
VDB-374497 | CTI Indicators (IOB, IOC, TTP, IOA)
https://vuldb.com/vuln/374497/cti
Third Party Advisory third-party-advisory
CVE-2026-13503 | CVE Analysis and Report
https://vuldb.com/cve/CVE-2026-13503
Third Party Advisory third-party-advisory
Submit #838686 | antlr ANTLR4 4.13.2 Path Traversal tokenVocab File Read
https://vuldb.com/submit/838686
Exploit exploit
issue-tracking
https://github.com/wooyun123/wooyun/issues/8
Scores
CVSS v3
5.3
EPSS
0.0055
EPSS Percentile
43.0%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
yes
Technical Impact
partial
Details
CWE
CWE-22
Status
published
Products (3)
antlr/ANTLR4
4.13.0
antlr/ANTLR4
4.13.1
antlr/ANTLR4
4.13.2
Published
Jun 28, 2026
Tracked Since
Jun 28, 2026