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CVE-2026-13503: ANTLR4 4.13.0, 4.13.1, 4.13.2
CVE-2026-13503. CVSS 3.1 base score 5.3 (MEDIUM, Vendor/CNA). EPSS 0.00767 (percentile 0.55122), scored 24-Oct-2026.
Affected technology
ANTLR4 · 4.13.0, 4.13.1, 4.13.2
antlr
Description’s affected range: up to 4.13.2
Component: tokenVocab Grammar Option Handler
Function: getImportedVocabFile
File: tool/src/org/antlr/v4/parse/TokenVocabParser.java
Attack conditions (VulDB, CVSS 4.0): Network (remote) · No privileges required · No user interaction required
What an attacker can do
VulDB’s CVSS 4.0 assessment (base score 5.5/10) rates confidentiality impact as low; integrity and availability impact as none. The description does not specify what an attacker can achieve beyond these rated impacts.
- CWE
- CWE-22
- CCR priority
- 21.4 /100 (P4)
- CVSS 3.1
- 5.3 /10 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N · Vendor/CNA
- EPSS
- 0.00767 · percentile 0.55265 · 2026-10-25
- KEV
- no
Provenance
- FIRST EPSS daily exploit-probability · Source record · observed 2026-10-25 19:52:47.952465+00:00 UTC
- NVD CVE API 2.0 · Source record · observed 2026-10-25 19:51:06.643138+00:00 UTC
Stable permalink: https://cybercodered.org/item/cve-cve-2026-13503.html