Vulnerability · Published Sep 6, 2026 · Assigned by VulnCheck

CVE-2026-86255wger before 2.5 Uncontrolled Resource Consumption via date_sequence

Medium 6.5

In plain English

A medium-severity uncontrolled resource consumption in wger from wger-project. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 38% of all known vulnerabilities).

Severity (CVSS 3.1)6.5Medium

Exploit odds (30 days)0.4%top 62.0% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
PyPI	wger	no fix listed	GHSA-v25j-wqcw-fvhj

Affected products (as reported)

Vendor	Product	Versions
wger-project	wger	0 – before 2.5

Weakness: CWE-400 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

References

GitHub Security Advisory (GHSA-v25j-wqcw-fvhj) vendor-advisory
VulnCheck Advisory: wger before 2.5 Uncontrolled Resource Consumption via date_sequence third-party-advisory