Redirect Bypass in Gitea via Backslash Encoding

Publication date: 2026-07-03

Last updated on: 2026-07-03

Assigner: Gitea Limited

Description

Gitea versions up to and including 1.25.4 allow redirect bypasses through raw or percent-encoded backslashes in redirect_to values.

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-07-03

Last Modified

2026-07-03

Generated

2026-07-04

AI Q&A

2026-07-04

EPSS Evaluated

N/A

NVD

CVE-2026-25779

Affected Vendors & Products

Vendor	Product	Version / Range
gitea	gitea	to 1.25.4 (inc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-601	The web application accepts a user-controlled input that specifies a link to an external site, and uses that link in a redirect.

Attack-Flow Graph

Executive Summary

This vulnerability exists in Gitea versions up to and including 1.25.4. It allows attackers to bypass redirect restrictions by using raw or percent-encoded backslashes in the redirect_to parameter.

Impact Analysis

The vulnerability can allow an attacker to bypass intended redirect restrictions, potentially leading users to malicious sites or unintended locations without proper validation.

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