# ANTLR4 vulnerabilities

Source: https://junglewise.ai/threats/technologies/antlr4  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Updated: 9 November 2026, 03:07 UTC. Rebuilt every hour.  
Data: https://junglewise.ai/threats/technologies/antlr4.json  
License: CC BY 4.0 with a link back

Junglewise Threat Intelligence has tracked 3 vulnerabilities in ANTLR4: 0 in the last 7 days and 0 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-13503, was published on 28 June 2026.

## Counts

- Last 7 days: 0
- Last 30 days: 0
- Last 90 days: 0
- All time: 3 (0 critical, 0 exploited in the wild)

## About ANTLR4

ANTLR (ANother Tool for Language Recognition) is a powerful parser generator for reading, processing, executing, or translating structured text or binary files.

## Latest ANTLR4 vulnerabilities

- [CVE-2026-13503: antlr ANTLR4 path traversal in TokenVocabParser](https://junglewise.ai/threats/cve-2026-13503-antlr-antlr4-path-traversal-in-tokenvocabparser) (medium, CVSS 5.3, published 28 Jun 2026)
- [CVE-2026-13501: antlr ANTLR4 command injection in GoTarget](https://junglewise.ai/threats/cve-2026-13501-antlr-antlr4-command-injection-in-gotarget) (medium, CVSS 5.3, published 28 Jun 2026)
- [CVE-2026-13500: antlr ANTLR4 code injection in Grammar Action Block Handler](https://junglewise.ai/threats/cve-2026-13500-antlr-antlr4-code-injection-in-grammar-action-block-handler) (high, CVSS 7.3, published 28 Jun 2026)

## Most severe ANTLR4 vulnerabilities

- [CVE-2026-13500: antlr ANTLR4 code injection in Grammar Action Block Handler](https://junglewise.ai/threats/cve-2026-13500-antlr-antlr4-code-injection-in-grammar-action-block-handler) (high, CVSS 7.3, published 28 Jun 2026)
- [CVE-2026-13503: antlr ANTLR4 path traversal in TokenVocabParser](https://junglewise.ai/threats/cve-2026-13503-antlr-antlr4-path-traversal-in-tokenvocabparser) (medium, CVSS 5.3, published 28 Jun 2026)
- [CVE-2026-13501: antlr ANTLR4 command injection in GoTarget](https://junglewise.ai/threats/cve-2026-13501-antlr-antlr4-command-injection-in-gotarget) (medium, CVSS 5.3, published 28 Jun 2026)

## Vulnerabilities per week

Nothing was published in the last eight weeks.

| Week of | Vulns | Critical | Exploited |
| --- | --- | --- | --- |
| 17 Aug 2026 | 0 | 0 | 0 |
| 24 Aug 2026 | 0 | 0 | 0 |
| 31 Aug 2026 | 0 | 0 | 0 |
| 7 Sep 2026 | 0 | 0 | 0 |
| 14 Sep 2026 | 0 | 0 | 0 |
| 21 Sep 2026 | 0 | 0 | 0 |
| 28 Sep 2026 | 0 | 0 | 0 |
| 5 Oct 2026 | 0 | 0 | 0 |
| 12 Oct 2026 | 0 | 0 | 0 |
| 19 Oct 2026 | 0 | 0 | 0 |
| 26 Oct 2026 | 0 | 0 | 0 |
| 2 Nov 2026 | 0 | 0 | 0 |
| 9 Nov 2026 | 0 | 0 | 0 |

## Sources

NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories. Rebuilt every hour. Cite as: Junglewise Threat Intelligence, "ANTLR4 vulnerabilities", https://junglewise.ai/threats/technologies/antlr4, 9 November 2026.