Vulnerability · Published Oct 12, 2026 · Assigned by VulDB

CVE-2026-108812SEMCMS SEMCMS_User.php user improper authorization

Medium 6.5

In plain English

A medium-severity security flaw in SEMCMS. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 24% of all known vulnerabilities).

Severity (CVSS 3.1)6.5Medium

Exploit odds (30 days)0.3%top 76.3% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

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.

Affected products (as reported)

Vendor	Product	Versions
n/a	SEMCMS	5.0

Weakness: CWE-285, CWE-266 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L/E:P/RL:X/RC:R

References

VDB-416589 | SEMCMS SEMCMS_User.php user improper authorization vdb-entry
VDB-416589 | CTI Indicators (IOB, IOC, TTP, IOA) signature, permissions-required
CVE-2026-108812 | CVE Analysis and Report third-party-advisory
Submit #964027 | semcms semcmsPHP(多语)版 V5.0 Unauthorized access vulnerability third-party-advisory
https://github.com/ants01/semcmsPHP-V5.0-There-is-an-unauthorized-deletion-of-arbitrary-users. exploit