CVE-2026-27779

Severity CVSS v4.0:

Pending analysis

Type:

CWE-284 Improper Access Control

Publication date:

03/07/2026

Last modified:

06/07/2026

Description

Gitea versions before 1.25.5 accept malformed or injected forwarded-proto values when detecting public URLs, allowing spoofed canonical URL generation.

Impact

Vector 3.x

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS v3.1 Severity and Metrics:

Base Score: 7.50 HIGH
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): None
Integrity (I): None
Availability (A): High

Base Score 3.x

7.50

Severity 3.x

HIGH

References to Advisories, Solutions, and Tools

https://blog.gitea.com/release-of-1.25.5/
https://github.com/go-gitea/gitea/pull/36810
https://github.com/go-gitea/gitea/pull/36836
https://github.com/go-gitea/gitea/releases/tag/v1.25.5