Auth bypass in Emlog

CVE-2026-21429

Emlog is an open source website building system. In version 2.5.23, the admin can set controls which makes users unable to edit or delete their articles after publishing them. As of time of publication, no known patched versions are available.

Vulnerability class: Broken Access Control

Published · last modified .

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N.

EPSS exploit prediction

EPSS: 0.002 (13.3th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 13th percentile — 13.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2026-21429: held from 0.002 to 0.002.

EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: +0.000

Affected products

  • Emlog — versions 2.5.23, = 2.5.23

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-21429?
CVE-2026-21429 is a medium-severity vulnerability in Emlog, classified under Missing Authorization. CVSS score: 4.3/10. Published 2026-01-02.
How severe is CVE-2026-21429?
Medium severity. CVSS v3 base score is 4.3 out of 10.