Privilege Escalation in LiteSpeed Technologies OpenLiteSpeed web server version 1.7.8…
Priority MEDIUM 43CWE-269Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Privilege escalation
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-269.
Summary
Privilege Escalation in LiteSpeed Technologies OpenLiteSpeed web server version 1.7.8 allows attackers to gain root terminal access and execute commands on the host system.
Why it matters now
EPSS 0.02707 86th percentileScored 2026-11-07
Public exploit Yes 3 exploit referencesTagged by NVD and the CNA
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:litespeedtech:openlitespeed:1.7.8:*:*:*:*:*:*:* | 1.7.8 | Vulnerable | litespeedtech |
- cpe:2.3:a:litespeedtech:openlitespeed:1.7.8:*:*:*:*:*:*:* Versions 1.7.8 Vulnerable ·litespeedtech
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2021-26758
- 2026-10-03 Alias added: GHSA-9f37-v7ww-2cmh
References
More litespeedtech Openlitespeed vulnerabilities
- TI-2022-00030 Authenticated Remote Code Execution in OpenLiteSpeed Web Server CVSS 3.1HIGH 8.8
- TI-2020-04489 The WebAdmin Console in OpenLiteSpeed before v1.6.5 does not strictly check request URLs… CVSS 3.1CRITICAL 9.8
- TI-2026-23945 OS command injection in LiteSpeed Technologies OpenLiteSpeed CVSS 4.0HIGH 8.6
- TI-2022-00031 Privilege Escalation in OpenLiteSpeed Web Server CVSS 3.1HIGH 8.8
- TI-2023-21334 LiteSpeed OpenLiteSpeed before 1.7.18 does not strictly validate HTTP request headers. CVSS 3.1HIGH 7.5
- TI-2015-03304 Use-after-free vulnerability in Open Litespeed before 1.3.10. CVSS 3.1HIGH 7.5
Sources
- CVE-2021-26758 · CVE Program
- CVE-2021-26758 · NVD
- FIRST EPSS
- GHSA-9f37-v7ww-2cmh · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences