What is CVE-2026-22799?

CVE-2026-22799 is a high-severity vulnerability in Emlog, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 8.8/10. Published 2026-01-12.

How severe is CVE-2026-22799?

High severity. CVSS v3 base score is 8.8 out of 10.

Arbitrary file upload in Emlog

CVE-2026-22799

Emlog is an open source website building system. emlog v2.6.1 and earlier exposes a REST API endpoint (/index.php?rest-api=upload) for media file uploads. The endpoint fails to implement proper validation of file types, extensions, and con…

Vulnerability class: Unrestricted File Upload

EPSS: 0.006 (45.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Emlog — versions <= 2.6.1

Weakness classification (CWE)

CWE-434 — Unrestricted Upload of File with Dangerous Type

References

security-advisories@github.com (x_refsource_CONFIRM, Exploit, Vendor Advisory)
security-advisories@github.com (Patch, x_refsource_MISC)

Frequently asked questions

What is CVE-2026-22799?: CVE-2026-22799 is a high-severity vulnerability in Emlog, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 8.8/10. Published 2026-01-12.
How severe is CVE-2026-22799?: High severity. CVSS v3 base score is 8.8 out of 10.