CVE-2026-13502

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.

CVSS v3 4.5 MEDIUM
CVSS v2.0 3.5 LOW

4.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.0 / Impact : 3.4

Attack Vector LOCAL

Attack Complexity HIGH

Privileges Required LOW

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact LOW

Scope UNCHANGED

3.5^/10

CVSS v2.0 : LOW

Vector : AV:L/AC:H/Au:S/C:P/I:P/A:P

Exploitability : 1.5 / Impact : 6.4

Access Vector LOCAL

Access Complexity HIGH

Authentication SINGLE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://github.com/wooyun123/wooyun/issues/7
https://vuldb.com/cve/CVE-2026-13502
https://vuldb.com/submit/838685
https://vuldb.com/vuln/374498
https://vuldb.com/vuln/374498/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-2026-13502

Mitre link : CVE-2026-13502

CVE.ORG link : CVE-2026-13502

JSON object : View

Products Affected

No product.

CWE

CWE-362

Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

CWE-367

Time-of-check Time-of-use (TOCTOU) Race Condition

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