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

Quick assessment

Affected
antlr ANTLR4
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

ANTLR ANTLR是ANTLR团队的一款语法解析器生成框架。 ANTLR4 4.13.2及之前版本存在安全漏洞，该漏洞源于GoTarget函数存在命令注入。以下版本受到影响：4.13.0版本、4.13.1版本和4.13.2版本。

CVSS 5.3 · Medium EPSS 1.18% · P67

Possible ATT&CK Techniques 1 AI

T1059 · Command and Scripting Interpreter

Affected Version Matrix 3

VendorProduct Version RangeStatus
antlr ANTLR4 4.13.0 affected
4.13.1 affected
4.13.2 affected
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I. Basic Information for CVE-2026-13501

Vulnerability Information
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Vulnerability Title
antlr ANTLR4 gofmt GoTarget.java GoTarget command injection
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
在命令中使用的特殊元素转义处理不恰当(命令注入)
Source: CVE Program / CVE List V5
Vulnerability Title
ANTLR 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
ANTLR ANTLR是ANTLR团队的一款语法解析器生成框架。 ANTLR4 4.13.2及之前版本存在安全漏洞，该漏洞源于GoTarget函数存在命令注入。以下版本受到影响：4.13.0版本、4.13.1版本和4.13.2版本。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
antlr ANTLR4 4.13.0 cpe:2.3:a:antlr:antlr4:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-13501

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III. Intelligence Information for CVE-2026-13501

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Proof of Concept for CVE-2026-13501 (1)

Same Patch Batch · antlr · 2026-06-28 · 4 CVEs total

CVE-2026-13500 7.3 HIGH antlr ANTLR4 Grammar Action Block OutputFile.java code injection
CVE-2026-13503 5.3 MEDIUM antlr ANTLR4 tokenVocab Grammar Option TokenVocabParser.java getImportedVocabFile path tra
CVE-2026-13502 4.5 MEDIUM antlr ANTLR4 Maven Plugin GrammarDependencies.java ObjectInputStream.readObject toctou

IV. Related Vulnerabilities

Same product: ANTLR4
Same vendor: antlr
Same weakness: CWE-77

V. Comments for CVE-2026-13501

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