CVE-2026-86255: Wger-Project Wger

Medium severity, CVSS 6.5. EPSS: 0.4% chance of exploitation in the next 30 days.

wger before 2.5 fails to validate the maximum duration of routine date ranges, allowing authenticated users to create routines spanning arbitrarily long periods. Attackers can trigger the date_sequence computation via routine detail endpoints, forcing the server to iterate thousands of times per request and exhaust worker threads, denying service to legitimate users.

Affected products

• Wger-Project Wger: before 2.5 (fixed in 2.5)

Published 2026-09-06. Last modified 2026-09-18.