# Jelmer vulnerabilities

Source: https://junglewise.ai/threats/vendors/jelmer  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Updated: 12 November 2026, 03:07 UTC. Rebuilt every hour.  
Data: https://junglewise.ai/threats/vendors/jelmer.json  
License: CC BY 4.0 with a link back

Junglewise Threat Intelligence has tracked 6 vulnerabilities in Jelmer: 0 in the last 7 days and 5 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-122299, was published on 4 November 2026. 5 vulnerabilities in the last four weeks, up from none in the four before. 1 technology has a page of its own.

## Counts

- Last 7 days: 0
- Last 30 days: 5
- Last 90 days: 5
- All time: 6 (0 critical, 0 exploited in the wild)

## About Jelmer

Open source project focused on version control and collaborative development tools.

## Latest Jelmer vulnerabilities

- [CVE-2026-122299: Dulwich commit object parsing divergence from git](https://junglewise.ai/threats/cve-2026-122299-dulwich-before-1-2-20-contains-a-commit-object-parsing) (high, CVSS 8.8, published 4 Nov 2026)
- [CVE-2026-114098: Dulwich path traversal in stash pop via symlinks](https://junglewise.ai/threats/cve-2026-114098-dulwich-from-0-22-5-before-1-2-8-contains-a-path-traversal) (high, CVSS 7.8, published 21 Oct 2026)
- [CVE-2026-114097: Dulwich path traversal in filter_branch CommitFilter](https://junglewise.ai/threats/cve-2026-114097-dulwich-from-0-23-1-before-1-2-8-contains-a-path-traversal) (high, CVSS 7.8, published 21 Oct 2026)
- [CVE-2026-114096: Dulwich symlink following in porcelain.checkout](https://junglewise.ai/threats/cve-2026-114096-dulwich-from-0-24-0-before-1-2-8-contains-a-symlink-following) (high, CVSS 7.8, published 21 Oct 2026)
- [CVE-2026-114094: Dulwich path traversal via DOS drive letter prefixes on Windows](https://junglewise.ai/threats/cve-2026-114094-dulwich-before-1-2-9-fails-to-validate-dos-drive-letter-prefixes) (high, CVSS 8.8, published 21 Oct 2026)
- [CVE-2026-52726: Jelmer Dulwich arbitrary code execution via submodule path traversal](https://junglewise.ai/threats/cve-2026-52726-jelmer-dulwich-arbitrary-code-execution-via-submodule-path) (high, CVSS 7.5, published 10 Jun 2026)

## Most severe Jelmer vulnerabilities

- [CVE-2026-122299: Dulwich commit object parsing divergence from git](https://junglewise.ai/threats/cve-2026-122299-dulwich-before-1-2-20-contains-a-commit-object-parsing) (high, CVSS 8.8, published 4 Nov 2026)
- [CVE-2026-114094: Dulwich path traversal via DOS drive letter prefixes on Windows](https://junglewise.ai/threats/cve-2026-114094-dulwich-before-1-2-9-fails-to-validate-dos-drive-letter-prefixes) (high, CVSS 8.8, published 21 Oct 2026)
- [CVE-2026-114098: Dulwich path traversal in stash pop via symlinks](https://junglewise.ai/threats/cve-2026-114098-dulwich-from-0-22-5-before-1-2-8-contains-a-path-traversal) (high, CVSS 7.8, published 21 Oct 2026)
- [CVE-2026-114097: Dulwich path traversal in filter_branch CommitFilter](https://junglewise.ai/threats/cve-2026-114097-dulwich-from-0-23-1-before-1-2-8-contains-a-path-traversal) (high, CVSS 7.8, published 21 Oct 2026)
- [CVE-2026-114096: Dulwich symlink following in porcelain.checkout](https://junglewise.ai/threats/cve-2026-114096-dulwich-from-0-24-0-before-1-2-8-contains-a-symlink-following) (high, CVSS 7.8, published 21 Oct 2026)
- [CVE-2026-52726: Jelmer Dulwich arbitrary code execution via submodule path traversal](https://junglewise.ai/threats/cve-2026-52726-jelmer-dulwich-arbitrary-code-execution-via-submodule-path) (high, CVSS 7.5, published 10 Jun 2026)

## Vulnerabilities per week

5 vulnerabilities in the last four weeks, up from none in the four before.

| 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 | 4 | 0 | 0 |
| 26 Oct 2026 | 0 | 0 | 0 |
| 2 Nov 2026 | 1 | 0 | 0 |
| 9 Nov 2026 | 0 | 0 | 0 |

## Jelmer technologies

- [Jelmer Dulwich](https://junglewise.ai/threats/technologies/jelmer-dulwich): 5 vulnerabilities

## 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, "Jelmer vulnerabilities", https://junglewise.ai/threats/vendors/jelmer, 12 November 2026.