CVE-2026-123523
MEDIUM
NVD
CVSS Score
6.5
Severity
MEDIUM
Published
Nov 08, 2026
Vendor
unknown
Description
Vikunja before 2.7.1 contains an uncontrolled resource consumption vulnerability that allows authenticated users to exhaust server memory by requesting avatars at many distinct sizes. Attackers can upload a noisy avatar and fetch it at each size up to 1024, caching roughly a gigabyte per account without eviction and causing the API process to be OOM-killed.