CVE-2026-21430 HIGH

CVE-2026-21430: Emlog: CSRF chained with stored XSS leads to ATO

Vendor Emlog
Product emlog
Weakness CWE-352 · CSRF
Published January 2, 2026
Last update January 5, 2026
View on NVD All CVEs

CVSS base score

7.0/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction —
Confidentiality —
Integrity —

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:H/VA:N/SC:N/SI:H/SA:N/E:P

What the vulnerability does

01Description

Emlog is an open source website building system. In version 2.5.23, article creation functionality is vulnerable to cross-site request forgery (CSRF). This can lead to a user being forced to post an article with arbitrary, attacker-controlled content. This, when combined with stored cross-site scripting, leads to account takeover. As of time of publication, no known patched versions are available.

Key dates

02Disclosure timeline

January 2, 2026 CVE published
January 5, 2026 Record updated