CVE-2026-13503
antlr ANTLR4 tokenVocab Grammar Option TokenVocabParser.java getImportedVocabFile path traversal
Vexday Risk Score
30Low
SSVC decision (CISA)
Attend
PoC available → attend closely
CVSS 6.9EPSS —KEV nãoPoC públicaNuclei —Metasploit —Patch —
Lifecycle
28 Jun 2026Published on NVD
Recommendation: Plan a near-term fix — a public PoC already exists.
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.
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P
Affected products
antlr · ANTLR4public PoCs found — 1
cve_referencegithub.com/wooyun123/wooyun/issues/8unverified⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
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