{"id":"CVE-2026-54420","aliases":["EUVD-2026-36657","GHSA-3g44-c4qc-cxm8"],"status":"published","title":"LiteSpeed cPanel plugin before 2.4.8 (as distributed in LiteSpeed WHM PlugIn before 5.3.2.0)...","description":"LiteSpeed cPanel plugin before 2.4.8 (as distributed in LiteSpeed WHM PlugIn before 5.3.2.0) mishandles symlinks provided by a user with FTP or web shell access on a shared hosting server running CloudLinux/CageFS, as exploited in the wild in May 2026.","severity":{"version":"3.1","score":8.5,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.01439,"percentile":0.73538,"model":"v2026.06.15"},"facts":{"in_kev":true,"known_exploited":true,"public_exploit":true,"fix_available":false},"cwes":["CWE-61"],"published":"2026-06-14T03:23:12Z","modified":"2026-07-23T09:10:00Z","kev":{"date_added":"2026-06-15","due_date":"2026-06-18","required_action":"Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.","known_ransomware_use":"Unknown"},"exploitation":[{"source":"euvd","since":"2026-06-15"},{"source":"kev","since":"2026-06-15"}],"exploits":[{"source":"pocgithub","id":"HORKimhab/CVE-2026-54420","title":"HORKimhab/CVE-2026-54420","date":"2026-06-16","url":"https://github.com/HORKimhab/CVE-2026-54420"},{"source":"pocgithub","id":"Resellnom/litespeed-cpanel-cve-2026-54420-fix","title":"Resellnom/litespeed-cpanel-cve-2026-54420-fix","date":"2026-06-16","url":"https://github.com/Resellnom/litespeed-cpanel-cve-2026-54420-fix"},{"source":"pocgithub","id":"mahfuzreham/litespeed-cpanel-cve-2026-54420-fix","title":"mahfuzreham/litespeed-cpanel-cve-2026-54420-fix","date":"2026-06-16","url":"https://github.com/mahfuzreham/litespeed-cpanel-cve-2026-54420-fix"},{"source":"pocgithub","id":"fevar54/CVE-2026-54420-LiteSpeed-Symlink-Exploit","title":"fevar54/CVE-2026-54420-LiteSpeed-Symlink-Exploit","date":"2026-06-18","url":"https://github.com/fevar54/CVE-2026-54420-LiteSpeed-Symlink-Exploit"}],"products":[{"vendor":"litespeed","product":"cpanel plugin"},{"vendor":"litespeed technologies","product":"cpanel plugin"},{"vendor":"litespeedtech","product":"litespeed_cpanel_plugin"},{"vendor":"litespeedtech","product":"litespeed_whm_plugin"}],"references":[{"url":"https://www.litespeedtech.com/products/litespeed-web-server/control-panel-support/cpanel","tags":["Product"]},{"url":"https://blog.litespeedtech.com/2026/06/01/security-update-for-litespeed-cpanel-plugin-2/","tags":["Vendor Advisory"]},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-54420","tags":["government-resource","US Government Resource"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-54420"},{"url":"https://blog.litespeedtech.com/2026/06/01/security-update-for-litespeed-cpanel-plugin-2"},{"url":"https://github.com/advisories/GHSA-3g44-c4qc-cxm8"}],"sources":{"cve":[{"id":"CVE-2026-54420","description":"LiteSpeed cPanel plugin before 2.4.8 (as distributed in LiteSpeed WHM PlugIn before 5.3.2.0) mishandles symlinks provided by a user with FTP or web shell access on a shared hosting server running CloudLinux/CageFS, as exploited in the wild in May 2026.","status":"published","published":"2026-06-14T03:23:12.863Z","modified":"2026-06-16T03:56:05.377Z","cvss":[{"version":"3.1","score":8.5,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-61"],"updated_at":"2026-11-02T13:37:58.613221Z"}],"euvd":[{"id":"EUVD-2026-36657","description":"LiteSpeed cPanel plugin before 2.4.8 (as distributed in LiteSpeed WHM PlugIn before 5.3.2.0) mishandles symlinks provided by a user with FTP or web shell access on a shared hosting server running CloudLinux/CageFS, as exploited in the wild in May 2026.","status":"published","published":"2026-06-14T03:23:12Z","modified":"2026-06-16T03:56:05Z","cvss":[{"version":"3.1","score":8.5,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H","level":"high"}],"exploited_since":"2026-06-15","updated_at":"2026-11-02T18:20:40.975704Z"}],"ghsa":[{"id":"GHSA-3g44-c4qc-cxm8","title":"LiteSpeed cPanel plugin before 2.4.8 (as distributed in LiteSpeed WHM PlugIn before 5.3.2.0)...","description":"LiteSpeed cPanel plugin before 2.4.8 (as distributed in LiteSpeed WHM PlugIn before 5.3.2.0) mishandles symlinks provided by a user with FTP or web shell access on a shared hosting server running CloudLinux/CageFS, as exploited in the wild in May 2026.","status":"published","published":"2026-06-14T06:30:24Z","modified":"2026-06-15T21:30:32Z","cvss":[{"version":"3.1","score":8.5,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-61"],"updated_at":"2026-11-02T15:08:46.336077Z"}],"kev":[{"id":"CVE-2026-54420","title":"LiteSpeed cPanel Plugin UNIX Symbolic Link (Symlink) Following Vulnerability","description":"LiteSpeed cPanel plugin contains a UNIX symbolic link (Symlink) following vulnerability that could allow a user with FTP or web shell access on a shared hosting server running CloudLinux/CageFS.","cwes":["CWE-61"],"kev":{"date_added":"2026-06-15","due_date":"2026-06-18","required_action":"Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.","known_ransomware_use":"Unknown"},"updated_at":"2026-11-02T17:00:15.999436Z"}],"nvd":[{"id":"CVE-2026-54420","description":"LiteSpeed cPanel plugin before 2.4.8 (as distributed in LiteSpeed WHM PlugIn before 5.3.2.0) mishandles symlinks provided by a user with FTP or web shell access on a shared hosting server running CloudLinux/CageFS, as exploited in the wild in May 2026.","status":"published","published":"2026-06-14T04:16:28.63Z","modified":"2026-07-23T09:10:00.113Z","cvss":[{"version":"3.1","score":8.5,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-61"],"updated_at":"2026-11-02T14:12:23.846948Z"}]}}