{"items":[{"id":"NVI-00016090","kind":"vulnerability","title":"Astro: Authorization Bypass via Decode Iteration Limit and Rewrite Path Canonicalization Mismatch","revision":2,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected.","NVD lastModified does not establish freshness of every associated CPE record."],"lifecycle":"active","identifiers":["GHSA-vj59-8hwv-xxmv","CVE-2026-59731"],"plain_summary":"GitHub lists this reviewed advisory for astro. 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-3aef5359cac60e57bc5a395a11d747f1"],"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":"2026-07-20T21:58:27.000Z","value":"8.2 high","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-1da7a574f8d84c0088691c58ade2ef20"},{"kind":"CVSS","as_of":"2026-10-25T17:10:00.197Z","value":"8.2 HIGH (3.1)","meaning":"security-advisories@github.com severity; no combined Null risk score.","source_id":"sr-3aef5359cac60e57bc5a395a11d747f1"}],"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-1da7a574f8d84c0088691c58ade2ef20","url":"https://github.com/advisories/GHSA-vj59-8hwv-xxmv","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-vj59-8hwv-xxmv","publisher":"GitHub Advisory Database","observed_at":"2026-11-03T22:35:18.117Z"},{"id":"sr-3aef5359cac60e57bc5a395a11d747f1","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-59731","basis":"official_catalog","notes":"This product uses data from the NVD API but is not endorsed or certified by the NVD.","title":"CVE-2026-59731","publisher":"NIST National Vulnerability Database","observed_at":"2026-11-08T08:05:01.676Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-1da7a574f8d84c0088691c58ade2ef20"],"technology":"astro","known_exclusions":[],"conditions_summary":"# Astro 6.4.7 Authorization Bypass via Decode Iteration Limit and Rewrite Path Canonicalization Mismatch\n\n## Summary\n\nAstro 6.4.7 appears to reintroduce a middleware authorization bypass pattern when a request path is encoded more deeply than the newly introduced iterative URL decoder's maximum decoding depth.\n\nThe issue occurs because Astro performs authorization decisions on a partially decoded pathname after reaching a decoding iteration cap, while later route matching logic performs an additional `decodeURI()` operation and resolves the request to a protected route.\n\nAs a result, middleware and route matching may operate on different pathname representations, enabling authorization bypasses under specific application patterns.\n\n**Potential CWE:** CWE-647 – Use of Non-Canonical URL Paths for Authorization Decisions\n\n---\n\n## Vulnerable Pattern\n\nMiddleware authorization sees:\n\n```text\n/%61dmin\n```\n\nLater rewrite route matching sees:\n\n```text\n/admin\n```\n\nThis discrepancy allows a request that bypasses middleware checks to subsequently resolve to a protected route.\n\n---\n\n## Root Cause\n\n### Iterative Decoding Logic\n\nPR #16967 introduced iterative URI decoding:\n\n```js\nlet iterations =","public_affected_ranges":[">= 6.4.7, < 6.4.8"]}],"null_published_at":"2026-11-08T19:53:44.050Z","source_updated_at":"2026-07-20T21:58:27.000Z","source_disclosed_at":"2026-07-20T21:58:27.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Source facts changed; compare the preserved prior revision.","null_first_observed_at":"2026-11-03T22:35:18.117Z"},{"id":"NVI-00016090","kind":"vulnerability","title":"Astro: Authorization Bypass via Decode Iteration Limit and Rewrite Path Canonicalization Mismatch","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-vj59-8hwv-xxmv","CVE-2026-59731"],"plain_summary":"GitHub lists this reviewed advisory for astro. 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-1da7a574f8d84c0088691c58ade2ef20"],"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":"2026-07-20T21:58:27.000Z","value":"8.2 high","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-1da7a574f8d84c0088691c58ade2ef20"}],"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-1da7a574f8d84c0088691c58ade2ef20","url":"https://github.com/advisories/GHSA-vj59-8hwv-xxmv","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-vj59-8hwv-xxmv","publisher":"GitHub Advisory Database","observed_at":"2026-11-03T22:35:18.117Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-1da7a574f8d84c0088691c58ade2ef20"],"technology":"astro","known_exclusions":[],"conditions_summary":"# Astro 6.4.7 Authorization Bypass via Decode Iteration Limit and Rewrite Path Canonicalization Mismatch\n\n## Summary\n\nAstro 6.4.7 appears to reintroduce a middleware authorization bypass pattern when a request path is encoded more deeply than the newly introduced iterative URL decoder's maximum decoding depth.\n\nThe issue occurs because Astro performs authorization decisions on a partially decoded pathname after reaching a decoding iteration cap, while later route matching logic performs an additional `decodeURI()` operation and resolves the request to a protected route.\n\nAs a result, middleware and route matching may operate on different pathname representations, enabling authorization bypasses under specific application patterns.\n\n**Potential CWE:** CWE-647 – Use of Non-Canonical URL Paths for Authorization Decisions\n\n---\n\n## Vulnerable Pattern\n\nMiddleware authorization sees:\n\n```text\n/%61dmin\n```\n\nLater rewrite route matching sees:\n\n```text\n/admin\n```\n\nThis discrepancy allows a request that bypasses middleware checks to subsequently resolve to a protected route.\n\n---\n\n## Root Cause\n\n### Iterative Decoding Logic\n\nPR #16967 introduced iterative URI decoding:\n\n```js\nlet iterations =","public_affected_ranges":[">= 6.4.7, < 6.4.8"]}],"null_published_at":"2026-11-04T10:04:27.887Z","source_updated_at":"2026-07-20T21:58:27.000Z","source_disclosed_at":"2026-07-20T21:58:27.000Z","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":"2026-11-03T22:35:18.117Z"}],"next_cursor":null,"snapshot_revision":"42594"}