{"items":[{"id":"NVI-00013970","kind":"vulnerability","title":"Gitea OAuth2 PKCE S256 verifier bypass","revision":2,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-m5ch-ppfx-xv3v","CVE-2026-26247"],"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-2c798a8064776cf1f162fffbb27b340e"],"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":"2026-09-01T17:23:05.000Z","value":"9.1 critical","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-2a306f1171e9fa0f139ca85882acc45a"},{"kind":"EPSS","as_of":"2026-11-03T12:00:27.000Z","value":"0.495%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.42535. Missing scores are unknown.","source_id":"sr-2c798a8064776cf1f162fffbb27b340e"}],"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-2a306f1171e9fa0f139ca85882acc45a","url":"https://github.com/advisories/GHSA-m5ch-ppfx-xv3v","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-m5ch-ppfx-xv3v","publisher":"GitHub Advisory Database","observed_at":"2026-11-02T02:21:50.763Z"},{"id":"sr-2c798a8064776cf1f162fffbb27b340e","url":"https://www.first.org/epss/data.html","basis":"official_catalog","notes":"FIRST EPSS; probability of exploitation in the next 30 days, not local compromise. Dataset date/model retained; FIRST services terms apply.","title":"CVE-2026-26247","publisher":"FIRST EPSS","observed_at":"2026-11-03T17:44:07.781Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-2a306f1171e9fa0f139ca85882acc45a"],"technology":"code.gitea.io/gitea","known_exclusions":[],"conditions_summary":"Gitea versions before 1.25.5 do not persist the OAuth2 PKCE S256 challenge method correctly during authorization, allowing token exchange without the expected verifier check.","public_affected_ranges":["< 1.25.5"]}],"null_published_at":"2026-11-08T19:53:33.648Z","source_updated_at":"2026-09-01T17:23:05.000Z","source_disclosed_at":"2026-07-03T21:31:37.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Dated EPSS estimate updated; this is not a new disclosure or proof of exploitation.","null_first_observed_at":"2026-11-02T02:21:50.763Z"},{"id":"NVI-00013970","kind":"vulnerability","title":"Gitea OAuth2 PKCE S256 verifier bypass","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-m5ch-ppfx-xv3v","CVE-2026-26247"],"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-2a306f1171e9fa0f139ca85882acc45a"],"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":"2026-09-01T17:23:05.000Z","value":"9.1 critical","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-2a306f1171e9fa0f139ca85882acc45a"}],"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-2a306f1171e9fa0f139ca85882acc45a","url":"https://github.com/advisories/GHSA-m5ch-ppfx-xv3v","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-m5ch-ppfx-xv3v","publisher":"GitHub Advisory Database","observed_at":"2026-11-02T02:21:50.763Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-2a306f1171e9fa0f139ca85882acc45a"],"technology":"code.gitea.io/gitea","known_exclusions":[],"conditions_summary":"Gitea versions before 1.25.5 do not persist the OAuth2 PKCE S256 challenge method correctly during authorization, allowing token exchange without the expected verifier check.","public_affected_ranges":["< 1.25.5"]}],"null_published_at":"2026-11-02T10:00:37.193Z","source_updated_at":"2026-09-01T17:23:05.000Z","source_disclosed_at":"2026-07-03T21:31:37.000Z","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":"2026-11-02T02:21:50.763Z"}],"next_cursor":null,"snapshot_revision":"42594"}