Vulnerability details

CVE-2026-40258

gramps-project gramps-web-api

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

CVSS 3.1

9.1Critical

Official description

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.

CVSS scores

Score	Version	Source	Vector
9.1Critical	3.1	CVEProject cvelistV5 (CNA) (GitHub_M)	`CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H`

Affected products

Vendor	Product	Versions	Source
gramps-project	gramps-web-api	>= 1.6.0, < 3.11.1	CVEProject cvelistV5 (CNA)

References and advisories

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

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Details

Published: 2026-04-18
Last updated: 2026-04-20
State: Published
Assigner (CNA): GitHub_M

Exploit prediction (EPSS)

0.4%

Probability of exploitation in 30 days

34.4%

Percentile (among all CVEs)

SSVC assessment (CISA)

Automatable: No
Exploitation: None
Technical impact: Total

Weaknesses (CWE)

CWE-22
Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')