CVE-2026-13501: A security vulnerability has been detected in antlr ANTLR4 up to 4.13.2. Affected by this vulnerability is the function GoTarget of the file tool/src/org/antlr/v4/codegen/target/Go
A security vulnerability has been detected in antlr ANTLR4 up to 4.13.2. Affected by this vulnerability is the function GoTarget of the file tool/src/org/antlr/v4/codegen/target/GoTarget.java of the component gofmt. The manipulation leads to command injection. The attack can only be performed from a local environment. The exploit has been disclosed publicly and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
Details
Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2026-13501
Exploitation outlook
EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.
- Low exploitation riskCVE-2026-135010.68% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 48% of all scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2026-13501 | coverage & exploitation status | NVD · CVE.org |
Recent advisories for antlr ANTLR4
A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.
- mediumCVE-2026-13503: A vulnerability was detected in antlr ANTLR4 up to 4.13.2. Affected by this issue is the funct…nvd · 2026-06-28
- mediumCVE-2026-13502: A flaw has been found in antlr ANTLR4 up to 4.13.2. This affects the function ObjectInputStrea…nvd · 2026-06-28
- highCVE-2026-13500: A weakness has been identified in antlr ANTLR4 up to 4.13.2. Affected is an unknown function o…nvd · 2026-06-28
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