CVE-2026-21431 — MEDIUM (5.4)

Vulnerability Description

Emlog is an open source website building system. Version 2.5.23 has a stored cross-site scripting vulnerability in the `Resource media library ` function while publishing an article. As of time of publication, no known patched versions are available.

CVSS Score

5.4

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

REQUIRED

Scope

CHANGED

Confidentiality

LOW

Integrity

LOW

Availability

NONE

Affected Products

Vendor	Product	Versions
Emlog	Emlog	2.5.23

Related Weaknesses (CWE)

CWE-79

References

https://github.com/emlog/emlog/security/advisories/GHSA-9vc2-crhr-248xExploitVendor Advisory

FAQ

What is CVE-2026-21431?

CVE-2026-21431 is a vulnerability with a CVSS score of 5.4 (MEDIUM). Emlog is an open source website building system. Version 2.5.23 has a stored cross-site scripting vulnerability in the `Resource media library ` function while publishing an article. As of time of pub...

How severe is CVE-2026-21431?

CVE-2026-21431 has been rated MEDIUM with a CVSS base score of 5.4/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-21431?

Check the references section above for vendor advisories and patch information. Affected products include: Emlog Emlog.