high Known exploitedREV. 01
CVE-2026-54420LiteSpeed cPanel plugin — symlink following on shared hosting
The LiteSpeed cPanel plugin before 2.4.8 follows symbolic links planted by a tenant who already has file transfer (FTP) or web shell access, letting them cross out of their own account on a shared CloudLinux host.
Read the risk
THE VITAL STATS- CVSS score
- 8.5/ 10 CVSS v3.1
- EPSS probability
- 1% Likelihood of exploitation
- Attack complexity
- High Conditions needed to exploit
- Known exploited
- Yes — CISA KEV
- CVE published
- 2026-06-14
- Added to KEV
- 2026-06-15
- Exploit published
- Not recorded
- Confidence
- high
- Kill chain
- privilege escalation
- MITRE ATT&CK
- —
- Severity
- high
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
Attacker needsA tenant account on the shared host with file transfer or web shell access.
Fixed inLiteSpeed cPanel plugin 2.4.8, LiteSpeed WHM PlugIn 5.3.2.0
Behind the card
3 REFERENCES- 01CVE recordNVD recordnvd.nist.gov
- 02CISACISA Known Exploited Vulnerabilities catalogcisa.gov
- 03Vendor advisoryblog.litespeedtech.comblog.litespeedtech.com
Field-level provenanceTRACE THE SOURCES +
Which source supports each field, when it was retrieved, and who extracted it.
| Fields | Source | Retrieved | Extractor | Confidence |
|---|---|---|---|---|
| cvss, exploitation.attack_complexity, exploitation.exploit_available, references, published_at | nvd.nist.gov | 2026-09-24 | scrty-crds-pipeline/0.1 | high |
| exploitation.known_exploited, exploitation.kev_added | cisa.gov | 2026-09-24 | scrty-crds-pipeline/0.1 | high |
| epss | api.first.org | 2026-09-24 | scrty-crds-pipeline/0.1 | high |
| title, summary, severity, remediation, mitre_attack, kill_chain, recommended_action, confidence, tags, exploitation.prerequisites | nvd.nist.gov | 2026-09-24 | claude-code | high |
Printing history
THE RECORD- r1Initial base card
First printing. This card has not been reprinted since publication.