{"items":[{"id":"NVI-00009212","kind":"vulnerability","title":"joserfc: Unbounded JWE General JSON `recipients` Array Leads to CPU Exhaustion (DoS) via Repeated RSA Private-Key Decryption","revision":3,"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-jpxq-7h8p-2q76","CVE-2026-119283"],"plain_summary":"GitHub lists this reviewed advisory for joserfc. 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-77b0b335722ff32387b5e28af4e441a8"],"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":"2026-10-30T14:54:20.000Z","value":"7.5 high","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-f67cc07304ac454eae084933edf7506a"},{"kind":"CVSS","as_of":"2026-10-30T17:17:17.740Z","value":"7.5 HIGH (3.1)","meaning":"security-advisories@github.com severity; no combined Null risk score.","source_id":"sr-06ab4a52bc34f4b92375364cd3adbf6b"},{"kind":"EPSS","as_of":"2026-10-31T12:00:27.000Z","value":"0.229%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.13729. Missing scores are unknown.","source_id":"sr-77b0b335722ff32387b5e28af4e441a8"}],"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-f67cc07304ac454eae084933edf7506a","url":"https://github.com/advisories/GHSA-jpxq-7h8p-2q76","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-jpxq-7h8p-2q76","publisher":"GitHub Advisory Database","observed_at":"2026-10-31T21:55:49.621Z"},{"id":"sr-06ab4a52bc34f4b92375364cd3adbf6b","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-119283","basis":"official_catalog","notes":"This product uses data from the NVD API but is not endorsed or certified by the NVD.","title":"CVE-2026-119283","publisher":"NIST National Vulnerability Database","observed_at":"2026-11-03T09:59:24.124Z"},{"id":"sr-77b0b335722ff32387b5e28af4e441a8","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-2026-119283","publisher":"FIRST EPSS","observed_at":"2026-10-31T22:06:15.375Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-f67cc07304ac454eae084933edf7506a"],"technology":"joserfc","known_exclusions":[],"conditions_summary":"### Summary\n\n`joserfc.jwe.decrypt_json()`, the library's public parser for JWE General JSON Serialization, accepts an attacker-controlled `recipients` array of unbounded length and performs one full private-key decryption operation (`decrypt_cek`) for **every** recipient present in the input, with no cap on recipient count. An unauthenticated network attacker who can send a JWE General JSON document to any endpoint that decrypts it with an RSA key (e.g. RSA-OAEP) can force the victim to perform an arbitrary, attacker-chosen number of RSA private-key decryption operations from a single, relatively small HTTP request. This gives the attacker a highly asymmetric CPU-exhaustion (Denial of Service) primitive: local reproduction shows request size growing linearly with recipient count (~396 bytes/recipient) while server-side CPU time grows in lock-step (near 1:1 ratio between recipient-count growth and decrypt-time growth), and the library's only documented mitigation knob, `verify_all_recipients=False`, does **not** reduce the CPU cost, since the decrypt loop attempts every recipient's `decrypt_cek()` unconditionally before that flag is ever consulted. This is CWE-400 (Uncontrolled Reso","public_affected_ranges":["< 1.7.5"]}],"null_published_at":"2026-11-03T10:03:31.367Z","source_updated_at":"2026-10-30T14:54:20.000Z","source_disclosed_at":"2026-10-30T14:54:20.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Source facts changed; compare the preserved prior revision.","null_first_observed_at":"2026-10-31T21:55:49.621Z"},{"id":"NVI-00009212","kind":"vulnerability","title":"joserfc: Unbounded JWE General JSON `recipients` Array Leads to CPU Exhaustion (DoS) via Repeated RSA Private-Key Decryption","revision":2,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-jpxq-7h8p-2q76","CVE-2026-119283"],"plain_summary":"GitHub lists this reviewed advisory for joserfc. 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-77b0b335722ff32387b5e28af4e441a8"],"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":"2026-10-30T14:54:20.000Z","value":"7.5 high","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-f67cc07304ac454eae084933edf7506a"},{"kind":"EPSS","as_of":"2026-10-31T12:00:27.000Z","value":"0.229%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.13729. Missing scores are unknown.","source_id":"sr-77b0b335722ff32387b5e28af4e441a8"}],"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-f67cc07304ac454eae084933edf7506a","url":"https://github.com/advisories/GHSA-jpxq-7h8p-2q76","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-jpxq-7h8p-2q76","publisher":"GitHub Advisory Database","observed_at":"2026-10-31T21:55:49.621Z"},{"id":"sr-77b0b335722ff32387b5e28af4e441a8","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-2026-119283","publisher":"FIRST EPSS","observed_at":"2026-10-31T22:06:15.375Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-f67cc07304ac454eae084933edf7506a"],"technology":"joserfc","known_exclusions":[],"conditions_summary":"### Summary\n\n`joserfc.jwe.decrypt_json()`, the library's public parser for JWE General JSON Serialization, accepts an attacker-controlled `recipients` array of unbounded length and performs one full private-key decryption operation (`decrypt_cek`) for **every** recipient present in the input, with no cap on recipient count. An unauthenticated network attacker who can send a JWE General JSON document to any endpoint that decrypts it with an RSA key (e.g. RSA-OAEP) can force the victim to perform an arbitrary, attacker-chosen number of RSA private-key decryption operations from a single, relatively small HTTP request. This gives the attacker a highly asymmetric CPU-exhaustion (Denial of Service) primitive: local reproduction shows request size growing linearly with recipient count (~396 bytes/recipient) while server-side CPU time grows in lock-step (near 1:1 ratio between recipient-count growth and decrypt-time growth), and the library's only documented mitigation knob, `verify_all_recipients=False`, does **not** reduce the CPU cost, since the decrypt loop attempts every recipient's `decrypt_cek()` unconditionally before that flag is ever consulted. This is CWE-400 (Uncontrolled Reso","public_affected_ranges":["< 1.7.5"]}],"null_published_at":"2026-11-01T19:14:01.606Z","source_updated_at":"2026-10-30T14:54:20.000Z","source_disclosed_at":"2026-10-30T14:54:20.000Z","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":"2026-10-31T21:55:49.621Z"},{"id":"NVI-00009212","kind":"vulnerability","title":"joserfc: Unbounded JWE General JSON `recipients` Array Leads to CPU Exhaustion (DoS) via Repeated RSA Private-Key Decryption","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-jpxq-7h8p-2q76","CVE-2026-119283"],"plain_summary":"GitHub lists this reviewed advisory for joserfc. 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-f67cc07304ac454eae084933edf7506a"],"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":"2026-10-30T14:54:20.000Z","value":"7.5 high","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-f67cc07304ac454eae084933edf7506a"}],"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-f67cc07304ac454eae084933edf7506a","url":"https://github.com/advisories/GHSA-jpxq-7h8p-2q76","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-jpxq-7h8p-2q76","publisher":"GitHub Advisory Database","observed_at":"2026-10-31T21:55:49.621Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-f67cc07304ac454eae084933edf7506a"],"technology":"joserfc","known_exclusions":[],"conditions_summary":"### Summary\n\n`joserfc.jwe.decrypt_json()`, the library's public parser for JWE General JSON Serialization, accepts an attacker-controlled `recipients` array of unbounded length and performs one full private-key decryption operation (`decrypt_cek`) for **every** recipient present in the input, with no cap on recipient count. An unauthenticated network attacker who can send a JWE General JSON document to any endpoint that decrypts it with an RSA key (e.g. RSA-OAEP) can force the victim to perform an arbitrary, attacker-chosen number of RSA private-key decryption operations from a single, relatively small HTTP request. This gives the attacker a highly asymmetric CPU-exhaustion (Denial of Service) primitive: local reproduction shows request size growing linearly with recipient count (~396 bytes/recipient) while server-side CPU time grows in lock-step (near 1:1 ratio between recipient-count growth and decrypt-time growth), and the library's only documented mitigation knob, `verify_all_recipients=False`, does **not** reduce the CPU cost, since the decrypt loop attempts every recipient's `decrypt_cek()` unconditionally before that flag is ever consulted. This is CWE-400 (Uncontrolled Reso","public_affected_ranges":["< 1.7.5"]}],"null_published_at":"2026-10-31T22:13:31.290Z","source_updated_at":"2026-10-30T14:54:20.000Z","source_disclosed_at":"2026-10-30T14:54:20.000Z","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":"2026-10-31T21:55:49.621Z"}],"next_cursor":null,"snapshot_revision":"42594"}