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Vulnerability record · CVE-2025-50977 · published 27 August 2025

CVE-2025-50977: Gitblit cross-site scripting vulnerability

Gitblit · Gitblit

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.

6.1 CVSS 3.1 Medium EPSS 0.28% · top 81.6% CWE-79 · Cross-site scripting
6.1CVSS 3.1 base score
0.28%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

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.

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/4rdr/proofs/blob/main/info/gitblit-v1.7.1-reflected-XSS-via-angularjs-expression.md ExploitThird Party Advisory
https://github.com/4rdr/proofs/blob/main/info/gitblit-v1.7.1-reflected-XSS-via-angularjs-expression.md ExploitThird Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2025-50977), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.