CVE-2026-40353: medium-severity vulnerability in wger-project wger
wger: Stored XSS via Unescaped License Attribution Fields
Published · Updated
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13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 5.1epss 0.2%
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.
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
Affected products
wger-project · wgerRelated CVEs — wger-project wger
In the same product, most dangerous first.
CVE-2026-86255HIGHwger before 2.5 Uncontrolled Resource Consumption via date_sequenceEPSS 0.4%CVE-2026-43948CRITICALwger: cross-tenant password reset and plaintext disclosure via gym=None bypassEPSS 0.4%CVE-2026-86254MEDIUMwger Incomplete Authorization Fix Cross-Tenant Account DeletionEPSS 0.4%CVE-2026-40474HIGHwger has Broken Access Control in the Global Gym Configuration Update EndpointEPSS 0.3%CVE-2026-27839MEDIUMwger: IDOR in nutritional_values endpoints exposes private dietary data via direct ORM lookupEPSS 0.3%CVE-2026-27835MEDIUMwger: IDOR in RepetitionsConfig and MaxRepetitionsConfig API leak other users' workout dataEPSS 0.3%