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NVD description
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 manipulation causes time-of-check time-of-use. The attack is restricted to local execution. A high degree of complexity is needed for the attack. It is indicated that the exploitability is difficult. The exploit has been published and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
Priority
LOW
Exploitation
NONE
PoC
NONE
Patch
NONE
Momentum
NONE
CVE-2026-13502 Time-of-Check Time-of-Use Vulnerability in ANTLR4 Maven Plugin Up to 4.13.2 https://vulmon.com/vulnerabilitydetails?qid=CVE-2026-13502
Post summary
CVE-2026-13502 is a time‑of‑check/time‑of‑use flaw in the ANTLR4 Maven plugin up to version 4.13.2. No PoC, exploit, patch, or active exploitation details are provided in the text.