CVE-2026-40258

CRITICAL 9.1

Gramps Web API has Zip Slip Path Traversal in Media Archive Import

CVSS Score

9.1

EPSS Score

0.0%

EPSS Percentile

0th

The Gramps Web API is a Python REST API for the genealogical research software Gramps. Versions 1.6.0 through 3.11.0 have a path traversal vulnerability (Zip Slip) in the media archive import feature. An authenticated user with owner-level privileges can craft a malicious ZIP file with directory-traversal filenames to write arbitrary files outside the intended temporary extraction directory on the server's local filesystem. Startig in version 3.11.1, ZIP entry names are now validated against the resolved real path of the temporary directory before extraction. Any entry whose resolved path falls outside the temporary directory raises an error and aborts the import.

CWE	CWE-22
Vendor	gramps-project
Product	gramps-web-api
Published	Apr 17, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

High

User Interaction

None

Scope

Changed

Confidentiality

High

Integrity

High

Availability

High

Affected Versions

gramps-project / gramps-web-api

>= 1.6.0, < 3.11.1

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/gramps-project/gramps-web-api/security/advisories/GHSA-m5gr-86j6-99jp github.com: https://github.com/gramps-project/gramps-web-api/commit/3ed4342711e3ec849552df09b1fe2fbf2ca5c29a github.com: https://github.com/gramps-project/gramps-web-api/releases/tag/v3.11.1