by Kastro
Paper/Archive/CVE-2026-21430

CVE-2026-21430

emlog emlog — Emlog: CSRF chained with stored XSS leads to ATO

EPSS 0.2%CVSS 9.3
critical.is priorityof 100
30
CVSS 9.3 (NVD)9.3 / 10 × 3027.9Not in CISA KEV+300.0EPSS percentile 8.1.081 × 201.6No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

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

ProductAffectedFixed inSource
emlog= 2.5.23–CNA

Scores by source

NVD9.3CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N
GitHub_M (CNA)7.0CVSS: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
CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: partial

References

refgithub.com/emlog/emlog/security/advisories/GHSA-2g2w-vmg7-pq4q