Cyber Resilience

CVE-2025-53924

MediumPublic PoC

Published: 16 July 2025

Published
16 July 2025
Modified
18 July 2025
KEV Added
—
Patch
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CVSS Score v3.1 6.9 CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:L/A:N
EPSS Score 0.0018 39.4th percentile
Risk Priority 14 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2025-53924 is a medium-severity Cross-site Scripting (CWE-79) vulnerability in Emlog Emlog. Its CVSS base score is 6.9 (Medium).

Operationally, exploitation aligns with the MITRE ATT&CK technique JavaScript (T1059.007); ranked at the 39.4th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

EU & UK References

Vulnerability details

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 authenticated remote attackers to inject arbitrary web script or HTML via the siteurl parameter. It is possible to inject…

more

malicious code into siteurl parameter resulting in Stored XSS. When someone clicks on the link the malicious code is executed. As of time of publication, no known patched versions exist.

CWE(s)
CWE-79

Related Threats

MITRE ATT&CK Enterprise TechniquesAI

T1059.007 JavaScript Execution
Adversaries may abuse various implementations of JavaScript for execution.
attack.mitre.org →
T1190 Exploit Public-Facing Application Initial Access
Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.
attack.mitre.org →
T1539 Steal Web Session Cookie Credential Access
An adversary may steal web application or service session cookies and use them to gain access to web applications or Internet services as an authenticated user without needing credentials.
attack.mitre.org →
T1555.003 Credentials from Web Browsers Credential Access
Adversaries may acquire credentials from web browsers by reading files specific to the target browser.
attack.mitre.org →
T1606.001 Web Cookies Credential Access
Adversaries may forge web cookies that can be used to gain access to web applications or Internet services.
attack.mitre.org →
Why these techniques?

Stored XSS in emlog allows authenticated attackers to inject arbitrary JavaScript into links, enabling browser-based JavaScript execution (T1059.007), exploitation of public-facing web apps (T1190), stealing web session cookies (T1539), extracting credentials from browsers (T1555.003), and stealing/forging web cookies (T1606.001).

Affected Assets

emlog
emlog
≤ 2.5.17

Mitigating Controls

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

CA-8 Penetration Testing
addresses: CWE-79

Penetration testing submits XSS payloads to web applications, detecting cross-site scripting flaws for subsequent remediation.

SI-10 Information Input Validation
addresses: CWE-79

Validates web inputs to reject script-related content that could produce XSS.

SI-15 Information Output Filtering
addresses: CWE-79

Output validation against expected content can reject or sanitize script content in generated web pages, reducing XSS exploitability.

References