{"items":[{"id":"NVI-00018542","kind":"vulnerability","title":"Gitea: Open Redirect via redirect_to","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-j5r2-4c8j-xc3m","CVE-2026-25779"],"plain_summary":"GitHub lists this reviewed advisory for github.com/go-gitea/gitea. Published version ranges and source prerequisites are shown below; this is not an inspection of a visitor’s application.","review_status":"source_listed","control_topics":[],"public_actions":[{"summary":"Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.","source_ids":["sr-39242b189efec6ab33f97511b96b2277"],"action_type":"investigate","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null}],"schema_version":"1.1.0","source_metrics":[],"why_it_matters":"Published affected context helps an owner decide what evidence to gather. This report has not examined your application.","related_sources":[{"id":"sr-39242b189efec6ab33f97511b96b2277","url":"https://github.com/advisories/GHSA-j5r2-4c8j-xc3m","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-j5r2-4c8j-xc3m","publisher":"GitHub Advisory Database","observed_at":"2026-11-06T07:20:20.042Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-39242b189efec6ab33f97511b96b2277"],"technology":"github.com/go-gitea/gitea","known_exclusions":[],"conditions_summary":"### Details\n\nDespite 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.\n\n### PoC\n\nWhen a user uses this URL to login:\n\n`https://gitea.com/user/login?redirect_to=/a/../\\example.com`\n\nThey would be redirected to `example.com` upon a successful login to their gitea account.\n\n### Impact\n\n* Phishing: Attackers can use trusted domain links to redirect victims to credential-harvesting pages\n* OAuth/SSO Token Theft: In authentication flows, authorization codes or tokens may leak via redirect\n* Referer Leakage: Sensitive URL parameters may be exposed to attacker domains via the Referer header\n* Cache Poisoning: In deployments with shared caches, malicious redirects may be cached and served to other users","public_affected_ranges":["<= 1.25.4"]}],"null_published_at":"2026-11-07T07:07:39.850Z","source_updated_at":"2026-06-17T18:10:47.000Z","source_disclosed_at":"2026-06-17T18:10:46.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"First indexed by Null; source disclosure date is shown separately.","null_first_observed_at":"2026-11-06T07:20:20.042Z"}],"next_cursor":null,"snapshot_revision":"44495"}