Reflected XSS in cPanel cpsrvd error page
CVE-2023-29489 is a reflected cross-site scripting vulnerability in cPanel affecting versions before 11.109.9999.116. The issue occurs on the cpsrvd error page when it processes an invalid webcall ID, allowing attacker-controlled input to be reflected into the response without proper neutralization. The content indicates the flaw is exploitable without authentication. Fixed versions are 11.109.9999.116, 11.108.0.13, 11.106.0.18, and 11.102.0.31.
Are you exposed to this one?
Mallory correlates every CVE against your assets, your vendors, and active adversary campaigns. Know which vulnerabilities matter for you, not just which ones are loud.
Impact, mitigation & remediation
What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
Impact
What an attacker gets, and what they’ve been doing with it.
Mitigation
If you can’t patch tonight, do this now.
Remediation
Patch, then assume compromise.
Exploits
1 valid exploit after Mallory filtered fakes, detection scripts, and README-only repos (1 hidden).
This repository contains a Python script (cve_2023_29489.py) and a README.md. The script is an operational exploit for CVE-2023-29489, a cross-site scripting (XSS) vulnerability in cPanel. The exploit takes a list of target hostnames or IP addresses (provided by the user in a file), and for each, attempts to access the /cpanelwebcall endpoint with a crafted XSS payload. If the payload is reflected and triggers a JavaScript prompt, the host is considered vulnerable. Results are printed to the console, saved to CVE-2023-29489.txt, and vulnerable URLs are opened in the default web browser. The script uses multithreading for efficiency and provides colored terminal output. The README provides installation and usage instructions for both Kali Linux and Termux environments. No hardcoded target endpoints are present; the script is designed for mass scanning of user-supplied cPanel hosts.
Affected products & vendors
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
Recent activity
3 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
The version that knows your environment.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.