EUVD-2026-41625
GHSA-j5r2-4c8j-xc3m
Severity by source
AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Primary rating from Vendor (https://github.com/go-gitea/gitea).
CVSS VectorVendor: https://github.com/go-gitea/gitea
Lifecycle Timeline
3DescriptionCVE.org
Details
Despite the validation within urlIsRelative in modules/httplib/url.go, an open redirect is still possible due to usage of directory traversal sequences plus a back-slash in the "redirect_to" parameter.
PoC
When a user uses this URL to login:
https://gitea.com/user/login?redirect_to=/a/../\example.com
They would be redirected to example.com upon a successful login to their gitea account.
Impact
- Phishing: Attackers can use trusted domain links to redirect victims to credential-harvesting pages
- OAuth/SSO Token Theft: In authentication flows, authorization codes or tokens may leak via redirect
- Referer Leakage: Sensitive URL parameters may be exposed to attacker domains via the Referer header
- Cache Poisoning: In deployments with shared caches, malicious redirects may be cached and served to other users
AnalysisAI
Open redirect in Gitea's login flow allows external domain hijacking by bypassing the urlIsRelative validation in modules/httplib/url.go through a combination of directory traversal sequences and a backslash in the redirect_to parameter. All Gitea instances running version 1.25.4 and below are affected; a working proof-of-concept is publicly available in the GitHub Security Advisory. Exploitation enables phishing via trusted Gitea domains, OAuth/SSO authorization code theft, Referer-header leakage of sensitive parameters, and potential cache poisoning — no public exploit identified as confirmed actively exploited (CISA KEV absent).
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View allVendor StatusVendor
SUSE
Severity: Moderate| Product | Status |
|---|---|
| SUSE Linux Enterprise Server 16.1 | Affected |
| SUSE Linux Enterprise Server for SAP applications 16.1 | Affected |
| SUSE Linux Enterprise Module for Package Hub 15 SP5 | Affected |
| SUSE Linux Enterprise Module for Package Hub 15 SP6 | Affected |
| openSUSE Leap 15.5 | Affected |
| openSUSE Leap 15.6 | Affected |
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External POC / Exploit Code
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