CVE-2026-91971 — Vikunja before 2.6.0 Denial of Service via Avatar Upload
Vikunja before 2.6.0 fails to apply pixel decode limits to avatar and project-background upload endpoints, allowing authenticated users to upload crafted images that decode to e…
Published: 2026-09-15 · CVSS: 7.1 · CVSS 4.0
Vikunja before 2.6.0 fails to apply pixel decode limits to avatar and project-background upload endpoints, allowing authenticated users to upload crafted images that decode to excessive pixel counts. Attackers can upload small images with extreme aspect ratios that consume significant CPU and memory during processing, causing denial of service through repeated or concurrent uploads.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7