{"items":[{"id":"NVI-00018632","kind":"vulnerability","title":"Gitea: Stored XSS via glTF `extensionsRequired` in Gitea 3D File Viewer","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-9cpj-qc93-vw8v","CVE-2026-28737"],"plain_summary":"GitHub lists this reviewed advisory for code.gitea.io/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-471c54ce8d6612f63f66637d2e10e137"],"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":[{"kind":"CVSS","as_of":"2026-06-17T18:10:20.000Z","value":"8.7 high","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-471c54ce8d6612f63f66637d2e10e137"}],"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-471c54ce8d6612f63f66637d2e10e137","url":"https://github.com/advisories/GHSA-9cpj-qc93-vw8v","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-9cpj-qc93-vw8v","publisher":"GitHub Advisory Database","observed_at":"2026-11-06T07:20:20.042Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-471c54ce8d6612f63f66637d2e10e137"],"technology":"code.gitea.io/gitea","known_exclusions":[],"conditions_summary":"## Summary\n\nMe again.\n\nGitea's built-in 3D file viewer (powered by Online3DViewer) is vulnerable to stored cross-site scripting (XSS) through crafted `.gltf` files. When a glTF file declares an unsupported required extension, Online3DViewer generates an error message containing the extension name and Gitea inserts it into the DOM using `innerHTML` without sanitization. An attacker who can push a `.gltf` file to any repository can execute arbitrary JavaScript in the context of any user who views the file.\n\n## Affected Versions\n\n- Gitea **1.25.0** and later (3D file preview was introduced in 1.25 via the Online3DViewer integration)\n- Confirmed on `gitea:1.25-nightly` (SHA `e33d1da...`), which bundles `online-3d-viewer` npm package v0.16.0\n- The upstream Online3DViewer library is the root cause\n\n## Severity\n\n- Stored XSS: the payload persists in the repository and fires on every page view\n- Executes under the Gitea origin with the victim's session (cookies, CSRF tokens)\n- Any authenticated user viewing the file is compromised\n- Enables full account takeover (token creation, settings modification, repository manipulation)\n- No user interacti","public_affected_ranges":[">= 1.25.0, < 1.26.0"]}],"null_published_at":"2026-11-07T07:07:39.864Z","source_updated_at":"2026-06-17T18:10:20.000Z","source_disclosed_at":"2026-06-17T18:10:19.000Z","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":"42594"}