Forwarded-Protocol Spoofing in Gitea Before 1.25.5

Publication date: 2026-07-03

Last updated on: 2026-07-03

Assigner: Gitea Limited

Description

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

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-2026-27779

Affected Vendors & Products

Vendor	Product	Version / Range
gitea	gitea	to 1.25.5 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-284	The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.

Attack-Flow Graph

Impact Analysis

The vulnerability can lead to the generation of spoofed canonical URLs, which may cause incorrect URL representations. This could potentially mislead users or systems relying on accurate URL information, possibly affecting security or trustworthiness of the URLs.

Executive Summary

This vulnerability affects Gitea versions before 1.25.5. It involves the acceptance of malformed or injected forwarded-proto values when the software detects public URLs. This flaw allows an attacker to generate spoofed canonical URLs.

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