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CVE-2026-13502

MEDIUM
4.5
CVSS 3.1
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.

Metadata

CVE ID
CVE-2026-13502
State
PUBLISHED
Assigner
VulDB
Reserved
2026-06-27 18:28 UTC
Published
2026-06-28 14:45 UTC
Last updated
2026-06-28 14:45 UTC
Primary CWE
CWE-367
Time-of-check Time-of-use
Vendor / Product
antlr / ANTLR4
Sources
cve.org  ·  NVD

Severity & Metrics

4.5 MEDIUM CVSS 3.1
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
Affected products (1)
VendorProductPlatformVersions
antlr ANTLR4 — 4.13.0, 4.13.1, 4.13.2
Weakness (CWE)
CWESourceDescription
CWE-362 cna Race Condition
CWE-367 cna Time-of-check Time-of-use
CVSS scores (4)
ScoreSeverityVersionSourceVector
4.5 MEDIUM 3.1 cna CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
4.5 MEDIUM 3.0 cna CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
3.5 N/D 2.0 cna AV:L/AC:H/Au:S/C:P/I:P/A:P/E:POC/RL:ND/RC:UR
2.0 LOW 4.0 cna 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
References (5)
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