XSS in Emlog

CVE-2025-61599

Emlog is an open source website building system. A stored Cross-Site Scripting (XSS) vulnerability exists in the "Twitter"feature of EMLOG Pro 2.5.21 and below. An authenticated user with privileges to post a "Twitter" message can inject arbitrary JavaScript code. The malicious script is stored on the server and gets executed in the browser of any user, including administrators, when they click on the malicious post to view it. This issue does not currently have a fix.

Vulnerability class: XSS (Cross-Site Scripting)

Published · last modified .

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.002 (9.2th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 9th percentile — 9.2% 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-2025-61599: 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 <= 2.5.21

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2025-61599?
CVE-2025-61599 is a medium-severity vulnerability in Emlog, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2025-10-03.
How severe is CVE-2025-61599?
Medium severity. CVSS v3 base score is 5.4 out of 10.
Is CVE-2025-61599 known to be exploited?
1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.