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cPanel LiteSpeed Web Server Vulnerability Allows Shared Server Users to Gain Root-Level Access
Critical LiteSpeed Enterprise flaw fixed in 6.3.7 lets low-privilege shared-hosting users escalate to root and bypass CageFS.
cPanel issued an urgent advisory for a critical privilege escalation in LiteSpeed Web Server Enterprise versions before 6.3.7, allowing a low-privilege shared-hosting account to gain root-level server control and bypass tenant isolation controls including CloudLinux CageFS. Root access would let attackers access other hosted sites, steal databases and credentials, deploy phishing pages, and install backdoors. Administrators are urged to upgrade to 6.3.7 immediately via lsup.sh and to review privileged account activity, cron jobs, SSH keys, and system binaries; no CVE identifier was published.
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LiteSpeed Enterprise Flaw Could Let One Hosting Account Gain Root Access on a Shared Server
cPanel warns critical LiteSpeed Web Server Enterprise flaw (pre-6.3.7) lets shared-hosting account users gain root access.
A cPanel advisory published September 14 warns that a critical vulnerability in LiteSpeed Web Server Enterprise versions before 6.3.7 lets a low-privilege website user gain root access on shared-hosting servers, bypassing CageFS account isolation. LiteSpeed released version 6.3.7 on September 11, but auto-update may be delayed so admins should force the update manually. No CVE identifier, severity score, workaround, or exploitation information has been published. This is the third LiteSpeed root flaw since May, following CVE-2026-48172 and CVE-2026-54420 in the cPanel plugin, which were both actively exploited and added to CISA's KEV catalog.
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Critical cPanel Flaw Could Let One Hosting Customer Take Root Control of a Whole Server
cPanel patched critical flaw CVE-2026-65643 letting authenticated hosting customers with addon or parked domain rights execute code as root and fully compromise servers.
cPanel issued patches on August 27, 2026 for CVE-2026-65643, a flaw in domain parking and addon domain functionality in cPanel & WHM that lets an authenticated account holder create arbitrary files and execute code as root, yielding full server control. Fixed builds cover the 11.110, 11.134, 11.136 and 11.138 branches, including WP Squared 11.138.1.7, and auto-update servers receive the fix automatically. No CVSS score, published CVE record, or evidence of exploitation has appeared, and the flaw is absent from CISA's KEV catalog as of August 27. The article also recaps related 2026 cPanel-ecosystem issues, including KEV-listed LiteSpeed plugin flaws and the in-the-wild-exploited Phusion Passenger problem.
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Unpatched Kaltura mwEmbed Flaws Could Let Remote Attackers Read Files and Run Code
CERT/CC disclosed unpatched Kaltura mwEmbed flaws CVE-2026-19913 and CVE-2026-19912 allowing unauthenticated file reads and remote code execution.
CERT/CC disclosed two unpatched flaws in Kaltura's mwEmbed HTML5 player library, both rooted in unsafe deserialization in mwEmbedLoader.php and exploitable without authentication. CVE-2026-19913 (reporter-scored 9.1) reflects local file contents back via the ServiceUrl parameter, exposing secrets in local.ini; CVE-2026-19912 (reporter-scored 10.0) achieves PHP code execution by writing attacker-controlled objects into web-accessible directories via the uiconf_id parameter. No patch exists and CERT/CC could not reach Kaltura; affected releases include html5lib v2.45, v2.103 and earlier, with the shared multi-tenant CDN hosts also impacted. No exploitation or KEV listing was reported as of August 25, 2026.
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NovaCookies Campaigns Abuse Genuine Docusign Notifications to Steal Microsoft 365 Sessions
NovaCookies AitM phishing kit, a Sneaky 2FA variant, uses genuine Docusign lures to steal Microsoft 365 sessions at hundreds of organizations.
Island disclosed NovaCookies, a $320/month adversary-in-the-middle phishing-as-a-service platform that relays Microsoft 365 sign-ins through attacker infrastructure to capture credentials, MFA codes, and authenticated sessions. Campaigns abuse genuine Docusign envelopes and Microsoft/Google redirect hops so each step looks legitimate, with lure domains on .vu and alternating-case labels such as PwPt-sHaRe. Proofpoint assesses NovaCookies as a Sneaky 2FA variant with added flows for Okta and Entra domains federated to GoDaddy, and a fully managed PhaaS model. It has targeted hundreds of organizations in the U.S., U.K., Canada, Germany, Israel, and the U.A.E., and is advertised via Telegram with anti-analysis checks like a Cloudflare gate.
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