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cPanel disclosed and patched CVE-2026-58048, a critical privilege-escalation flaw in cPanel & WHM that allows an authenticated user with MySQL or MariaDB access to execute arbitrary SQL commands with full database administrator privileges. The bug, rated CVSS 9.4, affects all supported cPanel & WHM versions and WP Squared, and stems from the database rename process failing to preserve SQL mode correctly, enabling escalation into the database root context.
The company warned that in some shared-hosting, database, and operating-system configurations, the flaw could extend beyond database control to OS-level compromise and potentially full server takeover. cPanel said customers should upgrade immediately to fixed releases; if patching is delayed, administrators should temporarily revoke the MySQL feature from cPanel users and review database audit logs for suspicious administrative activity. CISA said no active exploitation had been observed and classified the issue as non-automatable despite its severe technical impact.
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On August 4, CISA listed CVE-2026-58048 with no observed exploitation, classified it as non-automatable, and rated its technical impact as total. This status update accompanied public reporting on the newly disclosed cPanel vulnerability.
cPanel released fixed builds for all supported cPanel & WHM versions and WP Squared/WP2 deployments, including 11.110.0.137, 11.118.0.71, 11.126.0.78, 11.134.0.48, 11.136.0.32, and 138.1.6. The flaw allows an authenticated user with MySQL or MariaDB access to execute arbitrary SQL commands with full database administrative privileges.
WebPros credited security researcher Vincent55 Yang with responsibly reporting the cPanel & WHM privilege-escalation flaw CVE-2026-58048. The references do not provide a date for when the report was made.
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WebPros cPanel disclosed and patched a critical authentication bypass flaw in **cPanel & WHM** and **WP Squared**, now tracked as `CVE-2026-41940` with a **CVSS 9.8** score. The bug affects all supported cPanel & WHM versions after `11.40` prior to fixed releases, and reporting indicates some unsupported versions are likely vulnerable as well. Researchers said the issue stems from improper session handling tied to a **CRLF injection** in the login flow, allowing unauthenticated remote attackers to poison session data and gain administrator or root-level access to exposed hosting control panels. cPanel released emergency updates across supported branches, published detection guidance, and advised administrators to force updates, restart `cpsrvd`, and investigate session files and logs for signs of compromise. Multiple sources reported the flaw was **actively exploited in the wild** before patches were issued, with hosting providers such as **Namecheap** and **KnownHost** taking emergency action by restricting access to management ports like `2083` and `2087` while deploying fixes. **CISA** added `CVE-2026-41940` to its **Known Exploited Vulnerabilities** catalog and ordered federal agencies to remediate quickly, while national cyber agencies in Canada, Austria, and Belgium also warned of the risk. Public technical analysis, proof-of-concept code, and exploit tooling released after disclosure increased the likelihood of broad opportunistic attacks against internet-exposed cPanel systems, which researchers estimated number in the hundreds of thousands to more than a million, raising the risk of website compromise, credential theft, ransomware, phishing, and multi-tenant hosting breaches.
Jun 29, 2026
cPanel disclosed and patched a critical authentication bypass in cPanel & WHM, tracked as **`CVE-2026-41940`**, after reports of active in-the-wild exploitation against hosting infrastructure. The flaw affects authentication paths in supported versions and can let unauthenticated attackers reach administrative interfaces, forge authenticated sessions, and potentially gain control of hosted websites, databases, email accounts, and server configuration. Government and industry alerts warned that shared hosting environments face outsized risk because a single compromised server can expose many downstream customer sites, and some providers temporarily restricted cPanel and WHM login ports while applying fixes. Public technical analysis and a GitHub proof-of-concept described an exploit chain involving manipulated HTTP headers and session cookie handling to create forged privileged sessions, including possible root-level WHM access. Separately, cPanel also patched three additional vulnerabilities in cPanel & WHM and **WP Squared**—**`CVE-2026-29201`**, **`CVE-2026-29202`**, and **`CVE-2026-29203`**—that enable arbitrary file read through path traversal, Perl code injection leading to remote code execution, and denial-of-service via unsafe symlink handling. The most severe of the newly disclosed flaws, **`CVE-2026-29202`**, affects the `create_user` API and can allow arbitrary Perl code execution on the server, reinforcing calls for immediate upgrades, restricted access to management interfaces, and log review for suspicious authorization and cookie activity.
Jun 29, 2026
A critical blind SQL injection flaw tracked as **`CVE-2026-57517`** affects **Control Web Panel** versions **`<= 0.9.8.1224`** through the **`userRes`** POST parameter on the user endpoint. Public disclosure says the bug can be exploited remotely without authentication, although an attacker may need to know or guess a valid non-root username on the target instance. The issue carries a **CVSS v3.1 score of 9.8** and allows arbitrary SQL execution against the backend database with **MySQL root** privileges. The disclosed attack path shows the database access can be escalated into arbitrary file write using MySQL features such as **`INTO DUMPFILE`**, allowing a PHP webshell to be written into a web-accessible **Roundcube logs** directory and resulting in remote code execution as the **`cwpsvc`** account. The vulnerability was disclosed by **Egidio Romano**, and the vendor has fixed it in **Control Web Panel `0.9.8.1225`**; administrators are being urged to upgrade immediately and apply the vendor's security updates.
Jul 2, 2026