CVE-2026-54420
LiteSpeed cPanel Plugin UNIX Symbolic Link (Symlink) Following Vulnerability
- 대응 우선순위
- 최우선
- CVSS
- 8.5
- EPSS
- 1.26% 백분위 66.3% · 2026.07.16 기준
- CISA KEV
- 등록
- 조치 기한
- 2026.06.18
- 공개일
- 2026.06.14
CISA KEV에 등록된 실제 악용 확인 취약점
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.
제품 LiteSpeed cPanel Plugin
영향 버전 LiteSpeed cPanel Plugin 2.3, < 2.4.8, < 5.3.2.0
수정 버전 LiteSpeed cPanel Plugin 2.4.8, 5.3.2.0
영향 여부, 우선 대응, 정식 해결과 결과 확인 절차를 요약합니다.
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.
조치 기한: 2026.06.18LiteSpeed cPanel Plugin의 현재 전체 버전이 공식 영향 범위(LiteSpeed cPanel Plugin 2.3, < 2.4.8, < 5.3.2.0)에 포함되는지 확인합니다. OS를 선택하면 해당 OS의 제품·패키지·KB·APAR 확인 명령만 표시됩니다.
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.
패치 후 같은 명령으로 전체 버전을 다시 확인해 LiteSpeed cPanel Plugin 2.4.8, 5.3.2.0 기준을 충족하는지 확인합니다. 이어서 유형 미확정 관련 오류·공격 흔적이 새로 발생하지 않는지 확인합니다.
CVSS 벡터 CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
CWE CWE-61
KEV 등록일 2026.06.15
랜섬웨어 캠페인 사용 미확인
CISA 비고 https://blog.litespeedtech.com/2026/06/01/security-update-for-litespeed-cpanel-plugin-2/ ; BOD 26-04: https://www.cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updates-based-risk ; Forensics Triage Requirements: https://www.cisa.gov/news-events/directives/bod-26-04-implementation-guidance-prioritizing-security-updates-based-risk ; https://nvd.nist.gov/vuln/detail/CVE-2026-54420
EPSS 데이터 기준일 2026.07.16