CVE-2026-1552
Published: 29 January 2026
Summary
CVE-2026-1552 is a medium-severity Injection (CWE-74) vulnerability in Sem-Cms Semcms. Its CVSS base score is 5.3 (Medium).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 26.1th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
The strongest mitigations our analysis identified are NIST 800-53 SI-10 (Information Input Validation) and AC-6 (Least Privilege).
Deeper analysis
CVE-2026-1552 is a SQL injection vulnerability in SEMCMS version 5.0, affecting unknown code within the /SEMCMS_Info.php file. The flaw arises from improper handling of the 'searchml' argument, enabling injection of malicious SQL payloads. It is classified under CWE-74 (Improper Neutralization of Special Elements used in an SQL Command) and CWE-89 (SQL Injection), with a CVSS v3.1 base score of 6.3 (AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L), indicating medium severity.
The vulnerability can be exploited remotely by an attacker who has low-privilege access, such as an authenticated user, over the network with low complexity and no user interaction required. Successful exploitation allows limited impacts, including low-level confidentiality violations (e.g., reading sensitive data), integrity alterations (e.g., modifying data), and availability disruptions (e.g., deleting data) via SQL injection techniques.
Advisories from VulDB (ctiid.343248, id.343248, submit.740549) document the issue, noting public disclosure of an exploit in a GitHub repository (Sqli22/Sqli/issues/4). No patches or vendor responses are available, as the vendor was contacted early but did not reply.
The exploit has been publicly disclosed and may be actively used, increasing the risk for unpatched SEMCMS 5.0 deployments.
OWASP Top 10 for Web (2025)
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2026-4971
Vulnerability details
A security vulnerability has been detected in SEMCMS 5.0. This vulnerability affects unknown code of the file /SEMCMS_Info.php. The manipulation of the argument searchml leads to sql injection. The attack is possible to be carried out remotely. The exploit has…
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been disclosed publicly and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
SQL injection in a remotely accessible web application (SEMCMS CMS) directly enables remote exploitation of a public-facing service for data access/modification.
CVEs Like This One
Affected Assets
Mitigating Controls
Mitigating Controls (NIST 800-53 r5) AI
Directly requires validation and sanitization of the 'searchml' input parameter to block malicious SQL syntax before it reaches the database.
Limits the database privileges of the low-privileged account used by SEMCMS_Info.php so that even a successful injection yields only the observed low-impact effects.
Requires timely remediation of the known SQL-injection flaw in /SEMCMS_Info.php once a fix or compensating code change becomes available.