CVE-2023-29489

Severity: medium (CVSS 6.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 65.5% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2023-04-27 · updated 2026-06-17
Weakness: CWE-79

Description

An issue was discovered in cPanel before 11.109.9999.116. XSS can occur on the cpsrvd error page via an invalid webcall ID, aka SEC-669. The fixed versions are 11.109.9999.116, 11.108.0.13, 11.106.0.18, and 11.102.0.31.

Affected products

WebPros cPanel: before 11.102.0.31; from 11.104.0 before 11.106.0.18; from 11.108.0 before 11.108.0.13; from 11.109.0 before 11.109.9999.116 — fixed in 11.102.0.31, 11.106.0.18, 11.108.0.13, 11.109.9999.116

How to fix

Upgrade to a fixed version: WebPros cPanel 11.102.0.31, 11.106.0.18, 11.108.0.13, 11.109.9999.116. Check the vendor advisory for mitigations.

References

https://blog.assetnote.io/2023/04/26/xss-million-websites-cpanel/
https://forums.cpanel.net/threads/cpanel-tsr-2023-0001-full-disclosure.708949/
https://blog.assetnote.io/2023/04/26/xss-million-websites-cpanel/
https://forums.cpanel.net/threads/cpanel-tsr-2023-0001-full-disclosure.708949/

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