Read the docs
TI-2026-29128 Aliases CVE-2026-40353GHSA-6f54-qjvm-wwq3

wger: Stored XSS via Unescaped License Attribution Fields

Priority MEDIUM 56CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
Passive
Attack complexity
Low
Attack requirements
None
Impact type
Cross-site scripting
Confidentiality · integrity · availability
None · None · None
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-79.

Summary

wger is a free, open-source workout and fitness manager. In versions 2.5 and below, the attribution_link property in AbstractLicenseModel constructs HTML by directly interpolating user-controlled license fields (such as license_author) without escaping, and templates render the result using Django's |safe filter. An authenticated user can create an ingredient with a malicious license_author value containing JavaScript, which executes in the browser of any visitor viewing the ingredient page, resulting in stored XSS. This issue has been fixed in version 2.5.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00207 10th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed wger (wger-project): 2.5

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
wger-projectwgerbefore 2.52.5Patch availableCNA
—wger (PyPI)up to 2.4—No fix listedGHSA-6f54-qjvm-wwq3
  • wger Vendorwger-project Affected before 2.5 Fixed in 2.5 Patch available CNA
  • wger (PyPI) Vendor— Affected up to 2.4 Fixed in — No fix listed GHSA-6f54-qjvm-wwq3

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:wger:wger:*:*:*:*:*:*:*:*before 2.5Vulnerablewger-project
  • cpe:2.3:a:wger:wger:*:*:*:*:*:*:*:* Versions before 2.5 Vulnerable ·wger-project

Remediation

  • Fix · CNA wger (wger-project) Fixed in 2.5

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-40353
  2. 2026-10-03 Alias added: GHSA-6f54-qjvm-wwq3

References

Exploit 1

Advisory 1

Other 2

  • TI-2022-02450 Improper Restriction of Excessive Authentication Attempts in wger-project/wger CVSS 3.1CRITICAL 9.8
  • TI-2026-29226 wger has Broken Access Control in the Global Gym Configuration Update Endpoint CVSS 3.1HIGH 7.6
  • TI-2026-22190 wger: IDOR in nutritional_values endpoints exposes private dietary data via direct ORM lookup CVSS 3.1MEDIUM 4.3
  • TI-2026-22186 wger: IDOR in RepetitionsConfig and MaxRepetitionsConfig API leak other users' workout data CVSS 3.1MEDIUM 4.3
  • TI-2026-22189 wger: IDOR via user-unscoped cache keys on routine API actions exposes workout data CVSS 3.1LOW 3.5

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences