Description
Wekan is open source kanban built with Meteor. Prior to 9.07, Wekan avatar upload functionality embeds user-supplied filenames into paths later passed to child_process.exec() for MIME-type detection. Because models/avatars.js and models/fileValidation.js used a shell command with the avatar filename, shell metacharacters such as backticks and $() in the filename could execute commands on the server. This issue is fixed in version 9.07.
References (3)
Core 3
Core References
X_Refsource_Confirm x_refsource_confirm
https://github.com/wekan/wekan/security/advisories/GHSA-35j7-h385-2q9g
X_Refsource_Misc x_refsource_misc
https://github.com/wekan/wekan/commit/a4c74a5980e9f778eb444fd346f32aa3d16786a9
X_Refsource_Misc x_refsource_misc
https://github.com/wekan/wekan/releases/tag/v9.07
Scores
CVSS v3
9.9
EPSS
0.0040
EPSS Percentile
33.1%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
total
Details
CWE
CWE-78
CWE-88
Status
published
Products (1)
wekan/wekan
< 9.07
Published
Jul 15, 2026
Tracked Since
Jul 16, 2026