What is CVE-2025-53923?

CVE-2025-53923 is a high-severity vulnerability in Emlog, classified under Cross-site Scripting. CVSS score: 8.2/10. Published 2025-07-16.

How severe is CVE-2025-53923?

High severity. CVSS v3 base score is 8.2 out of 10.

Is CVE-2025-53923 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

XSS in Emlog

CVE-2025-53923

Emlog is an open source website building system. A cross-site scripting (XSS) vulnerability in emlog up to and including pro-2.5.17 allows remote attackers to inject arbitrary web script or HTML via the keyword parameter. Due to lack of sanitization it is possible to inject HTML/JS code into keyword parameter. If one persuades an user into clicking into prepared link it is possible to execute any JS code in admin's browser. As of time of publication, no known patched versions exist.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.004 (27.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N.

Affected products

Emlog — versions <= pro-2.5.17

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

Public proof-of-concept exploits

fkie-cad/nvd-json-data-feeds

References

security-advisories@github.com (x_refsource_CONFIRM, Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2025-53923?: CVE-2025-53923 is a high-severity vulnerability in Emlog, classified under Cross-site Scripting. CVSS score: 8.2/10. Published 2025-07-16.
How severe is CVE-2025-53923?: High severity. CVSS v3 base score is 8.2 out of 10.
Is CVE-2025-53923 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.