CVE-2026-13500

A weakness has been identified in antlr ANTLR4 up to 4.13.2. Affected is an unknown function of the file tool/src/org/antlr/v4/codegen/model/OutputFile.java of the component Grammar Action Block Handler. Executing a manipulation can lead to code injection. The attack may be launched remotely. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.

CVSS v3 7.3 HIGH
CVSS v2.0 7.5 HIGH

7.3^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact LOW

Scope UNCHANGED

7.5^/10

CVSS v2.0 : HIGH

Vector : AV:N/AC:L/Au:N/C:P/I:P/A:P

Exploitability : 10.0 / Impact : 6.4

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://github.com/wooyun123/wooyun/issues/4
https://vuldb.com/cve/CVE-2026-13500
https://vuldb.com/submit/838568
https://vuldb.com/vuln/374495
https://vuldb.com/vuln/374495/cti

Configurations

No configuration.

History

28 Jun 2026, 15:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-06-28 15:16

Updated : 2026-06-29 18:46

NVD link : CVE-2026-13500

Mitre link : CVE-2026-13500

CVE.ORG link : CVE-2026-13500

JSON object : View

Products Affected

No product.

CWE

CWE-74

Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')

CWE-94

Improper Control of Generation of Code ('Code Injection')

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