What is CVE-2023-30090?

CVE-2023-30090 is a critical-severity vulnerability in Sem-Cms Semcms, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 9.8/10. Published 2023-05-05.

How severe is CVE-2023-30090?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Arbitrary file upload in Sem-Cms Semcms

CVE-2023-30090

Semcms Shop v4.2 was discovered to contain an arbitrary file uplaod vulnerability via the component SEMCMS_Upfile.php. This vulnerability allows attackers to execute arbitrary code via uploading a crafted PHP file.

Vulnerability class: Unrestricted File Upload

Published 2023-05-05 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.008 (54.0th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 54th percentile — 54.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000

Affected products

Sem-Cms Semcms — versions 4.2

Weakness classification (CWE)

CWE-434 — Unrestricted Upload of File with Dangerous Type

References

github.com/xlccccc/vuln/tree/master/Semcms (Product)

Frequently asked questions

What is CVE-2023-30090?: CVE-2023-30090 is a critical-severity vulnerability in Sem-Cms Semcms, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 9.8/10. Published 2023-05-05.
How severe is CVE-2023-30090?: Critical severity. CVSS v3 base score is 9.8 out of 10.