CVE-2025-50977: A template injection vulnerability leading to reflected cross-site scripting (XSS) has been identified in vers

Routine

MEDIUM 6.1DOWNGRADE

CVE-2025-50977 is a medium-severity flaw (CVSS 6.1) affecting gitblit. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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 spec

Why this priority

Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	6.1 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.3% (top 79%)
CISA exploited list	No
Weakness	CWE-79
Published	2025-08-27
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: gitblit

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-08-27 17:15 UTCPublished CVE record published
2026-06-17 09:35 UTCUpdated Record last modified

gitblit gitblit DOWNGRADE

Affected: 1.7.1

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.7.1

1. Check installed version

apt-cache policy gitblit || rpm -q gitblit || gitblit --version

2. No fixed release: DOWNGRADE to a release before 1.7.1 (Debian / Ubuntu)

apt-cache madison gitblit sudo apt install gitblit=<VERSION_BEFORE_1.7.1> sudo apt-mark hold gitblit

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list gitblit sudo dnf downgrade gitblit-<VERSION_BEFORE_1.7.1> sudo dnf versionlock add gitblit

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2025-50977?

gitblit: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2025-50977 being exploited?

CVE-2025-50977 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2025-50977 affect?

CVE-2025-50977 affects gitblit. Severity is medium (CVSS 6.1). 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 attacke

How urgent is CVE-2025-50977?

Priority 31/100. Public exploit reference

Software pages

Angular vulnerabilities

Related CVEs

CVE-2025-50978 MEDIUM 6.1 DOWNGRADE In Gitblit v1.7.1, a reflected cross-site scripting (XSS) vulnerability exists in the way repository path name

References

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