Vulnerability · Published Jan 2, 2026 · Assigned by GitHub_M

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

High 7.0

In plain English

A high-severity cross-site request forgery in emlog from emlog. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 8% of all known vulnerabilities).

Severity (CVSS 4.0)7.0High

Exploit odds (30 days)0.2%top 91.9% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

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.

Affected products (as reported)

Vendor	Product	Versions
emlog	emlog	= 2.5.23

Weakness: CWE-352, CWE-79 · 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

References

https://github.com/emlog/emlog/security/advisories/GHSA-2g2w-vmg7-pq4q x_refsource_CONFIRM