CVE-2021-41917

Severity: medium (CVSS 5.4 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.6% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2021-10-08 · updated 2026-06-17
Weakness: CWE-79

Description

webTareas version 2.4 and earlier allows an authenticated user to store arbitrary web script or HTML by creating or editing a client name in the clients section, due to incorrect sanitization of user-supplied data and achieve a Stored Cross-Site Scripting attack against the platform users and administrators. The affected endpoint is /clients/editclient.php, on the HTTP POST cn parameter.

Affected products

luiswang WebTareas: through 2.4

References

https://n4nj0.github.io/advisories/webtareas-multiple-vulnerabilities-i/
https://n4nj0.github.io/advisories/webtareas-multiple-vulnerabilities-i/

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