CVE-2026-13501: antlr ANTLR4 gofmt GoTarget.java GoTarget command injection

Severity: medium (CVSS 5.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-06-28 · updated 2026-10-25
Weakness: CWE-74

Description

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.

Affected products

ANTLR4: 4.13.0, 4.13.1, 4.13.2

References

https://github.com/wooyun123/wooyun/issues/6
https://vuldb.com/cve/CVE-2026-13501
https://vuldb.com/submit/838569
https://vuldb.com/vuln/374496
https://vuldb.com/vuln/374496/cti

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