CVE-2026-21430

Name: CVE-2026-21430
Creator: NVD / NIST
Published: 2026-01-02T19:15:47.697+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7/10EPSS 0.15%

Last modified Jun 17, 2026

CVE-2026-21430 is a high-severity vulnerability rated 7/10 on the CVSS scale. Emlog is an open source website building system. In version 2.5.23, article creation functionality is vulnerable to cross-site request forgery (CSRF). EPSS estimates a 0.15% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

9.3/10

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

CVSS 4.0

7/10

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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS Probability

0.15%

4.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Emlog	Emlog	2.5.23

References

https://github.com/emlog/emlog/security/advisories/GHSA-2g2w-vmg7-pq4qExploit, Vendor Advisory

Timeline

Published: Jan 2, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-21430?

How severe is CVE-2026-21430?

CVE-2026-21430 has a CVSS score of 7/10 (HIGH severity). The EPSS model estimates a 0.15% probability of exploitation in the next 30 days.

How do I fix CVE-2026-21430?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-21430?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST