Vulnerability Database

352,262

Total vulnerabilities in the database

CVE-2026-25779 — github.com/go-gitea/gitea

URL Redirection to Untrusted Site ('Open Redirect')

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

No technical information available.

CWEs:

Frequently Asked Questions

A security vulnerability is a weakness in software, hardware, or configuration that can be exploited to compromise confidentiality, integrity, or availability. Many vulnerabilities are tracked as CVEs (Common Vulnerabilities and Exposures), which provide a standardized identifier so teams can coordinate patching, mitigation, and risk assessment across tools and vendors.

CVSS (Common Vulnerability Scoring System) estimates technical severity, but it doesn't automatically equal business risk. Prioritize using context like internet exposure, affected asset criticality, known exploitation (proof-of-concept or in-the-wild), and whether compensating controls exist. A "Medium" CVSS on an exposed, production system can be more urgent than a "Critical" on an isolated, non-production host.

A vulnerability is the underlying weakness. An exploit is the method or code used to take advantage of it. A zero-day is a vulnerability that is unknown to the vendor or has no publicly available fix when attackers begin using it. In practice, risk increases sharply when exploitation becomes reliable or widespread.

Recurring findings usually come from incomplete Asset Discovery, inconsistent patch management, inherited images, and configuration drift. In modern environments, you also need to watch the software supply chain: dependencies, containers, build pipelines, and third-party services can reintroduce the same weakness even after you patch a single host. Unknown or unmanaged assets (often called Shadow IT) are a common reason the same issues resurface.

Use a simple, repeatable triage model: focus first on externally exposed assets, high-value systems (identity, VPN, email, production), vulnerabilities with known exploits, and issues that enable remote code execution or privilege escalation. Then enforce patch SLAs and track progress using consistent metrics so remediation is steady, not reactive.

SynScan combines attack surface monitoring and continuous security auditing to keep your inventory current, flag high-impact vulnerabilities early, and help you turn raw findings into a practical remediation plan.