antlr ANTLR4 Maven Plugin GrammarDependencies.java ObjectInputStream.readObject toctou_CVE-2026-13502

2 / 10

LOW

CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P

Description

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.

Basic Information

ID CVE-2026-13502

Source VulDB

Published Jun 28, 2026 at 14:45

Affected Product

Vendor antlr

Product ANTLR4

Version 4.13.0

Affected Versions antlr ANTLR4 4.13.0
antlr ANTLR4 4.13.1
antlr ANTLR4 4.13.2

CWE Classification

CWE-367 CWE-362

References

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    "lastseen": "",
    "description": "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.",
    "published": "2026-06-28T14:45:07.057Z",
    "modified": "2026-06-28T14:45:07.057Z",
    "type": "cve",
    "title": "antlr ANTLR4 Maven Plugin GrammarDependencies.java ObjectInputStream.readObject toctou",
    "source": "VulDB",
    "references": "https://vuldb.com/vuln/374498\nhttps://vuldb.com/vuln/374498/cti\nhttps://vuldb.com/cve/CVE-2026-13502\nhttps://vuldb.com/submit/838685\nhttps://github.com/wooyun123/wooyun/issues/7",
    "id": "CVE-2026-13502",
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    "sourceData": "antlr ANTLR4 4.13.0\nantlr ANTLR4 4.13.1\nantlr ANTLR4 4.13.2",
    "sourceHref": "",
    "cvss": {
        "score": 2,
        "severity": "LOW",
        "vector": "CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P",
        "version": "4.0"
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    "product": "ANTLR4",
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