{"schema":"threatline.record/2","record":{"id":"CVE-2026-71553","aliases":["GHSA-vmg4-6gfg-83qx"],"summary":"ApostropheCMS: 2nd-order prototype pollution via PATCH leading to single-request persistent DoS","details":"The vulnerability is a single-request persistent DoS by submitting e.g.\n\"PATCH /api/v1/article/<id>\" with a valid editor session and body of\n{\"toString.call\":\"x\"}, overwriting the global toString function with\nvalue x.\n\nFabian","categories":["Libraries & packages"],"product":"apostrophe","vendor":"apostrophecms","ecosystem":"npm","affected_ranges":[{"source":"GitHub Advisory Database","source_url":"https://github.com/advisories/GHSA-vmg4-6gfg-83qx","source_modified_at":"2026-10-28T15:12:57Z","fetched_at":"2026-10-28T15:55:58.673066Z","package":{"ecosystem":"npm","name":"apostrophe"},"range":"<= 4.32.0"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-71553","source_modified_at":"2026-08-17T20:14:15.721Z","fetched_at":"2026-10-28T15:55:58.673066Z","product":"apostrophe","vendor":"apostrophecms","versions":[{"version":"<= 4.32.0","status":"affected"}],"defaultStatus":null},{"source":"OSV","source_url":"https://osv.dev/vulnerability/GHSA-vmg4-6gfg-83qx","source_modified_at":"2026-09-02T15:30:17.631063461Z","fetched_at":"2026-10-28T15:55:58.673066Z","package":{"name":"apostrophe","ecosystem":"npm","purl":"pkg:npm/apostrophe"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"last_affected":"4.32.0"}]}],"versions":[]}],"fixed_versions":[{"source":"GitHub Advisory Database","source_url":"https://github.com/advisories/GHSA-vmg4-6gfg-83qx","source_modified_at":"2026-10-28T15:12:57Z","fetched_at":"2026-10-28T15:55:58.673066Z","package":{"ecosystem":"npm","name":"apostrophe"},"version":"4.32.1"}],"cvss":7.1,"severity":"High","kev":{"listed":false},"epss":{"probability":0.00429,"percentile":0.37047,"score_date":"2026-10-28"},"published_at":"2026-08-17T20:03:37.883Z","modified_at":"2026-10-28T15:12:57Z","provenance":[{"source":"GitHub Advisory Database","url":"https://github.com/advisories/GHSA-vmg4-6gfg-83qx","fetched_at":"2026-10-28T15:55:58.673066Z","source_modified_at":"2026-10-28T15:12:57Z"},{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-71553","fetched_at":"2026-10-28T15:55:58.673066Z","source_modified_at":"2026-08-17T20:14:15.721Z"},{"source":"OSV","url":"https://osv.dev/vulnerability/GHSA-vmg4-6gfg-83qx","fetched_at":"2026-10-28T15:55:58.673066Z","source_modified_at":"2026-09-02T15:30:17.631063461Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-71553","fetched_at":"2026-10-28T15:55:58.673066Z","source_modified_at":"2026-10-28"}],"sources":["GitHub Advisory Database","CVE List","OSV","EPSS"],"references":[{"source":"CVE List","url":"https://github.com/apostrophecms/apostrophe/security/advisories/GHSA-vmg4-6gfg-83qx","tags":["x_refsource_CONFIRM"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-71553","source":"GitHub Advisory Database"},{"source":"CVE List","url":"https://github.com/apostrophecms/apostrophe/commit/5a3746aaed49761e171c2cbfe793267c959829fd","tags":["x_refsource_MISC"]},{"url":"https://github.com/advisories/GHSA-vmg4-6gfg-83qx","source":"GitHub Advisory Database"}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","ssvc":{"exploitation":"none","automatable":"no","technical_impact":"partial","assessed_at":"2026-08-17T20:14:00.169874Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":"ecosystem","confidence":"heuristic","reviewed":false},"change_timestamp":"2026-10-28T15:12:57Z","content_hash":"0be9da9ce00414bde9e6831e1d10a2458a15beeaca2b70d6a3f981e8234f7d05"}}