CVE-2026-86255 Details
Description
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.
A denial-of-service vulnerability has been identified in wger Workout Manager versions prior to 2.5. The issue arises because the application fails to validate the maximum duration of routine date ranges. This allows authenticated users to create routines that span excessively long periods, such as 100 years. Once such a routine is created, the 'date_sequence' computation can be triggered through various routine detail endpoints. This process forces the server to iterate thousands of times per request, consuming significant CPU resources and exhausting worker threads. As a result, legitimate users experience service disruptions.
Users are advised to update to wger version 2.6 or later, where this vulnerability has been addressed.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Sep 6, 2026CISA-ADP
Assessed Sep 18, 2026References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/wger-project/wger/security/advisories/GHSA-v25j-wqcw-fvhj | [email protected] | AdvisoryExploitTechnical AnalysisVendor |
| https://www.vulncheck.com/advisories/wger-before-2.5-uncontrolled-resource-consumption-via-date-sequence | [email protected] | AdvisoryVendor |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-400 | Uncontrolled Resource Consumption | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| wger | < 2.5 |
CPE
Remediation
| |
Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Sep 18, 2026 | CVE Modified | CISA-ADP |
| Sep 6, 2026 | New CVE Received | [email protected] |