Skip to main content

ANTLR4 EUVDEUVD-2026-40001

| CVE-2026-13503 MEDIUM
Path Traversal (CWE-22)
2026-06-28 VulDB GHSA-w346-wxvq-p3xr
Java Path Traversal Antlr4 Red Hat Suse
5.5
CVSS 4.0 · Vendor: VulDB
Share

Severity by source

Vendor (VulDB) PRIMARY
5.5 MEDIUM
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
vuln.today AI
5.3 MEDIUM

Network-reachable build tool processing untrusted grammar files; no authentication or interaction required; impact limited to low-confidentiality file read only.

3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
SUSE
5.3 MEDIUM
AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Red Hat
5.3 MEDIUM
qualitative

Primary rating from Vendor (VulDB).

CVSS VectorVendor: VulDB

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
X

Lifecycle Timeline

2
CVSS changed
Jun 28, 2026 - 16:22 NVD
6.9 (MEDIUM) 5.5 (MEDIUM)
Analysis Generated
Jun 28, 2026 - 16:16 vuln.today

DescriptionCVE.org

A vulnerability was detected in antlr ANTLR4 up to 4.13.2. Affected by this issue is the function getImportedVocabFile of the file tool/src/org/antlr/v4/parse/TokenVocabParser.java of the component tokenVocab Grammar Option Handler. The manipulation results in path traversal. The attack can be executed remotely. The exploit is now public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

AnalysisAI

Path traversal in ANTLR4 up to 4.13.2 exposes arbitrary file read via the tokenVocab grammar option handler. The vulnerable function getImportedVocabFile in TokenVocabParser.java fails to sanitize user-controlled grammar option values, allowing an attacker to supply a crafted .g4 grammar file that causes the tool to read files outside the intended working directory. …

Unlock full vulnerability intelligence

  • Risk assessment & exploitation conditions
  • Attack chain visualization
  • Remediation with exact patch versions
  • Threat intelligence from 22 sources
  • Personal watchlist & email alerts
Continue with Google Continue with GitHub

Free forever · No credit card required

Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
Craft grammar file with tokenVocab traversal payload
Delivery
Submit or inject grammar into target build pipeline
Exploit
ANTLR4 tool invoked on malicious grammar
Execution
getImportedVocabFile resolves traversal path
Persist
Sensitive file contents read from host filesystem
Impact
Data exfiltrated via build logs or output artifacts
Sign in to reveal

Vulnerability AssessmentAI

Exploitation Exploitation requires that an attacker control or influence the value of the tokenVocab grammar option within an ANTLR4 grammar (.g4) file that is processed by the ANTLR4 build tool (versions through 4.13.2). … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 4.0 vector (AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N) scores 6.9 and signals a low-complexity, unauthenticated network-reachable path traversal with limited confidentiality impact and no integrity or availability impact. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario An attacker contributes or injects a malicious ANTLR4 grammar file into a repository or dependency source, embedding a tokenVocab option value containing a path traversal sequence such as ../../../../home/user/.ssh/id_rsa. When a developer or automated CI/CD pipeline runs the ANTLR4 tool against this grammar, getImportedVocabFile resolves the traversal path and reads the target file's contents. …
Remediation No vendor-released patch has been identified at the time of analysis - the vendor did not respond to the coordinated disclosure. … Detailed patch versions, workarounds, and compensating controls in full report.
Sign in to read full assessment

Threat intelligence, references, and detailed analysis are available after sign-in.

More in Java

View all
CVE-2012-4681 CRITICAL POC
9.8 Aug 28

Oracle Java SE 7 Update 6 and earlier contains multiple sandbox bypass vulnerabilities via the ClassFinder and forName m
CVE-2015-7450 CRITICAL POC
9.8 Jan 02

Remote code execution in IBM Sterling B2B Integrator, Sterling Integrator, and Tivoli Common Reporting allows unauthenti
CVE-2013-2465 CRITICAL POC
9.8 Jun 18

Java Runtime Environment sandbox bypass via incorrect image channel verification in 2D component allows remote unauthent
CVE-2011-3544 CRITICAL POC
9.8 Oct 19

Oracle Java SE JDK/JRE 7 and 6 Update 27 and earlier allows remote code execution with complete system compromise throug
CVE-2010-1871 HIGH POC
8.8 Aug 05

JBoss Seam 2 in Red Hat JBoss EAP 4.3.0 fails to sanitize JBoss Expression Language inputs, allowing remote attackers to
CVE-2012-1723 CRITICAL POC
9.8 Jun 16

Unspecified vulnerability in the Java Runtime Environment (JRE) component in Oracle Java SE 7 update 4 and earlier, 6 up
CVE-2013-0422 CRITICAL POC
9.8 Jan 10

Multiple vulnerabilities in Oracle Java 7 before Update 11 allow remote attackers to execute arbitrary code by (1) using
CVE-2012-0507 CRITICAL POC
9.8 Jun 07

Unspecified vulnerability in the Java Runtime Environment (JRE) component in Oracle Java SE 7 Update 2 and earlier, 6 Up
CVE-2015-4852 CRITICAL POC
9.8 Nov 18

The WLS Security component in Oracle WebLogic Server 10.3.6.0, 12.1.2.0, 12.1.3.0, and 12.2.1.0 allows remote attackers

CVE-2012-5076 CRITICAL POC
9.8 Oct 16

Unspecified vulnerability in the Java Runtime Environment (JRE) component in Oracle Java SE 7 Update 7 and earlier allow
CVE-2017-3066 CRITICAL POC
9.8 Apr 27

Remote unauthenticated attackers can execute arbitrary code on Adobe ColdFusion servers through Java deserialization fla
CVE-2012-0391 CRITICAL POC
9.8 Jan 08

The ExceptionDelegator component in Apache Struts before 2.2.3.1 interprets parameter values as OGNL expressions during

Same weakness CWE-22 – Path Traversal

View all
CVE-2019-3396 CRITICAL POC
9.8
CVE-2019-19781 CRITICAL POC
9.8
CVE-2020-5902 CRITICAL POC
9.8
CVE-2021-40444 HIGH POC
8.8
CVE-2021-27065 HIGH POC
7.8
CVE-2019-11510 CRITICAL POC
10.0
CVE-2018-13379 CRITICAL POC
9.1
CVE-2015-0016 HIGH POC
7.8

Same technique Path Traversal

View all
CVE-2025-64446 CRITICAL POC
9.8
CVE-2015-0016 HIGH POC
7.8
CVE-2016-0752 HIGH POC
7.5
CVE-2024-13159 CRITICAL POC
9.8
CVE-2024-13160 CRITICAL POC
9.8
CVE-2024-13161 CRITICAL POC
9.8
CVE-2014-0780 CRITICAL POC
9.8
CVE-2024-48248 HIGH POC
8.6

Vendor StatusVendor

SUSE

Severity: Moderate
Product Status
SUSE Linux Enterprise Module for Package Hub 15 SP7 Affected
SUSE Linux Enterprise Module for Package Hub 15 SP5 Affected
SUSE Linux Enterprise Module for Package Hub 15 SP6 Affected
openSUSE Leap 15.3 Affected
openSUSE Leap 15.4 Affected

Share

EUVD-2026-40001 vulnerability details – vuln.today
Back

This site uses cookies essential for authentication and security. No tracking or analytics cookies are used. Privacy Policy