CVE-2025-50977

MediumPublic PoC

Published: 27 August 2025

Published

27 August 2025

Modified

09 September 2025

KEV Added

—

Patch

—

CVSS Score v3.1 6.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

EPSS Score 0.0011 29.5th percentile

Risk Priority 12 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2025-50977 is a medium-severity Cross-site Scripting (CWE-79) vulnerability in Gitblit Gitblit. Its CVSS base score is 6.1 (Medium).

Operationally, exploitation aligns with the MITRE ATT&CK technique JavaScript (T1059.007); ranked at the 29.5th 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

🇪🇺 ENISA EUVD: EUVD-2025-25909

Vulnerability details

A template injection vulnerability leading to reflected cross-site scripting (XSS) has been identified in version 1.7.1, requiring authenticated admin access for exploitation. The vulnerability exists in the 'r' parameter and allows attackers to inject malicious Angular expressions that execute JavaScript…

code in the context of the application. The flaw can be exploited through GET requests to the summary endpoint as well as POST requests to specific Wicket interface endpoints, though the GET method provides easier weaponization. This vulnerability enables authenticated administrators to execute arbitrary client-side code, potentially leading to session hijacking, data theft, or further privilege escalation attacks.

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 →

T1221 Template Injection Stealth

Adversaries may create or modify references in user document templates to conceal malicious code or force authentication attempts.

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 →

Why these techniques?

Template injection vulnerability enables reflected XSS with arbitrary JavaScript execution in authenticated admin browser context (T1059.007, T1221), facilitating session hijacking via web session cookie theft (T1539) and credential theft from browsers (T1555.003).