What is CVE-2026-40353?

CVE-2026-40353 is a medium-severity vulnerability in Wger, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2026-04-17.

How severe is CVE-2026-40353?

Medium severity. CVSS v3 base score is 5.4 out of 10.

XSS in Wger

CVE-2026-40353

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) wit…

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.002 (11.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.

Affected products

Wger
Wger-project Wger — versions < 2.5

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

security-advisories@github.com (x_refsource_CONFIRM, Exploit, Mitigation, Vendor Advisory)
security-advisories@github.com (x_refsource_MISC, Release Notes)

Frequently asked questions

What is CVE-2026-40353?: CVE-2026-40353 is a medium-severity vulnerability in Wger, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2026-04-17.
How severe is CVE-2026-40353?: Medium severity. CVSS v3 base score is 5.4 out of 10.