{"id":"CVE-2026-89086","details":"In the jose package before 0.11.0 for OCaml, library calls to validate an RSA signature only confirm that PKCS #1 decoding succeeds, and proceed to declare the signature valid without the required steps that involve the public key.","aliases":["OSEC-2026-19"],"modified":"2026-09-12T03:47:22.137999571Z","published":"2026-09-10T19:52:47.039Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89086.json","cna_assigner":"mitre","cwe_ids":["CWE-347"]},"references":[{"type":"WEB","url":"https://osv.dev/vulnerability/OSEC-2026-19"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89086.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-89086"},{"type":"FIX","url":"https://github.com/ulrikstrid/ocaml-jose/commit/cf17d991ec6a0d1997956b6c7799890f9c28879e"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/ulrikstrid/ocaml-jose","events":[{"introduced":"0"},{"fixed":"a4a060bf4888d858566b798397815440e0c426c9"},{"fixed":"cf17d991ec6a0d1997956b6c7799890f9c28879e"}],"database_specific":{"source":["DESCRIPTION","REFERENCES"],"extracted_events":[{"introduced":"0"},{"fixed":"0.11.0"}]}}],"versions":["v0.10.0","v0.9.0","v0.8.2","v0.8.1","v0.8.0","v0.7.0","v0.5.1","v0.5.0","v0.4.0","v0.3.1","v0.2.0","v0.1.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-89086.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N"}]}