# CVE-2026-123619: Lektor path traversal in admin API on Windows

Source: https://junglewise.ai/threats/cve-2026-123619-lektor-through-3-3-14-and-3-4-0b15-contains-an-absolute-path  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-11-06. Updated: 2026-11-06  
License: CC BY 4.0 with a link back

CVE-2026-123619 · Severity: medium · CVSS 6.8 · Published 2026-11-06

Lektor, a static website generator with a built-in admin interface, contains a path traversal vulnerability on Windows systems that allows attackers to escape the project directory. An attacker using a malicious webpage with cross-site requests or DNS rebinding against the local unauthenticated admin server can delete arbitrary directories or write malicious files, potentially compromising the entire website project or the host system.

Technologies: [Lektor](https://junglewise.ai/threats/technologies/lektor). Vendors: [Lektor](https://junglewise.ai/threats/vendors/lektor).

## Quick answers

**Is CVE-2026-123619 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-123619 being exploited in the wild.

**How severe is CVE-2026-123619?** Medium severity, with a CVSS score of 6.8, published 6 November 2026.

**Which products and versions are affected?** Lektor through 3.3.14 and 3.4.0b15.

**Is there a fix for CVE-2026-123619?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-123619 attacked?** It is attacked over the network, in a web application.

**Am I affected by CVE-2026-123619?** Check whether you run Lektor at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

The vulnerability exists in Lektor's admin API on Windows, where the cleanup_path function fails to properly normalize absolute paths using drive letters (e.g., C:\). Attackers can craft requests to the deleterecord or newattachment endpoints with specially-crafted drive-letter paths to traverse outside the project directory. The attack requires network access to the local admin server but no authentication, and relies on the user having a malicious webpage open or being vulnerable to DNS rebinding.

## Affected products

- Lektor Lektor through 3.3.14 and 3.4.0b15

## Timeline

- 2026-11-06: disclosed

## References

- [https://github.com/lektor/lektor](https://github.com/lektor/lektor)
- [https://github.com/lektor/lektor/blob/v3.3.14/lektor/db.py](https://github.com/lektor/lektor/blob/v3.3.14/lektor/db.py)

## Related threats

- [Lektor cross-site request forgery in admin API](https://junglewise.ai/threats/cve-2026-104059-lektor-3-3-14-and-3-4-0b15-contains-a-cross-site-request-forgery)
- [Lektor path traversal in preview server](https://junglewise.ai/threats/cve-2026-75418-lektor-path-traversal-in-preview-server)