CVE-2026-40474Public exploitNetwork attack vector

Authenticated configuration takeover via unenforced permission

Published Apr 17, 2026 · Updated Apr 17, 2026

Missing authorization in wger before 2.5 allows remote authenticated users to modify installation-wide gym configuration. GymConfigUpdateView inherits WgerFormMixin rather than WgerPermissionMixin, so its declared change_gymconfig permission is never checked for the ownerless singleton. Any authenticated account can change the default gym and trigger save operations that reassign user profiles across the installation.

CVSS severity7.6
High
EPSS probability0.33%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authorization in wger before 2.5 allows remote authenticated users to modify installation-wide gym configuration. GymConfigUpdateView inherits WgerFormMixin rather than WgerPermissionMixin, so its declared change_gymconfig permission is never checked for the ownerless singleton. Any authenticated account can change the default gym and trigger save operations that reassign user profiles across the installation.

The record

CVE
CVE-2026-40474
Published
Apr 17, 2026
Updated
Apr 17, 2026
Vendor
wger Project
Product
wger
Classifications
CWE-284, CWE-862, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 17, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 17, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 2.5

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

wger Project · wgerversion=< 2.5

Published CVSS scores

7.6GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-284Improper Access Control
CWE-862Missing Authorization
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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