Improper authorization in SEMCMS user management
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Privilege escalation, Security bypass
- Confidentiality · integrity · availability
- None · Low · Low
- Fix status
- No fix listed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-266 and CWE-285.
Summary
SEMCMS up to 5.0 has an improper authorization flaw in the admin file /admin/SEMCMS_User.php, classified as CWE-285. A remote attacker can trigger it without privileges or user interaction. A public exploit has been disclosed and is linked in the references, and the CISA SSVC assessment lists exploitation as proof of concept. The vendor did not respond when contacted early about the disclosure.
Written with Claude Haiku 5.5 from the sources below · 2026-10-29
Description from the CNA
A security vulnerability has been detected in SEMCMS up to 5.0. The impacted element is an unknown function of the file /admin/SEMCMS_User.php?Class=Deleted&CF=user. Such manipulation leads to improper authorization. The attack may be performed from remote. The exploit has been disclosed publicly and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | SEMCMS | 5.0 | — | No fix listed | CNA |
- SEMCMS Vendor— Affected 5.0 Fixed in — No fix listed CNA
CPE names CNA · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:semcms:semcms:*:*:*:*:*:*:*:* | — | — | — |
- cpe:2.3:a:semcms:semcms:*:*:*:*:*:*:*:* Versions — — ·—
Remediation
The sources list no fixed version for SEMCMS.
Written with Claude Haiku 5.5 from the sources below · 2026-10-29
Timeline
- 2026-10-12 Threatist record created from CVE-2026-108812
- 2026-10-12 Alias added: GHSA-8rg8-qfgh-x9mp
- 2026-10-12 Priority changed: MEDIUM → LOW
- 2026-10-16 CISA SSVC decision points changed
- 2026-10-16 Priority changed: LOW → HIGH
References
Sources
- CVE-2026-108812 · CVE Program
- CVE-2026-108812 · NVD
- FIRST EPSS
- GHSA-8rg8-qfgh-x9mp · 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