Vulnerability in Antlr Antlr4
CVE-2026-13502
A flaw has been found in antlr ANTLR4 up to 4.13.2. This affects the function ObjectInputStream.readObject of the file antlr4-maven-plugin/src/main/java/org/antlr/mojo/antlr4/GrammarDependencies.java of the component Maven Plugin. This man…
Vulnerability class: Race Condition
CVSS v3 metric
CVSS v3 base score 4.5 (Medium). Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L.
Affected products
- Antlr Antlr4 — versions 4.13.0, 4.13.1, 4.13.2
Weakness classification (CWE)
References
- cna@vuldb.com (issue-tracking, exploit)
- cna@vuldb.com (third-party-advisory)
- cna@vuldb.com (third-party-advisory)
- cna@vuldb.com (technical-description, vdb-entry)
- cna@vuldb.com (signature, permissions-required)
Frequently asked questions
- What is CVE-2026-13502?
- CVE-2026-13502 is a medium-severity vulnerability in Antlr Antlr4, classified under Concurrent Execution using Shared Resource with Improper Synchronization (Race Condition). CVSS score: 4.5/10. Published 2026-06-28.
- How severe is CVE-2026-13502?
- Medium severity. CVSS v3 base score is 4.5 out of 10.