{"id":"CVE-2021-23899","aliases":["GHSA-mm8j-9x84-m9cv"],"url":"https://o3.security/vulnerability/CVE-2021-23899","summary":"Arbitrary code injection in json-sanitizer","details":"OWASP json-sanitizer before 1.2.2 may emit closing SCRIPT tags and CDATA section delimiters for crafted input. This allows an attacker to inject arbitrary HTML or XML into embedding documents.","published":"2021-01-13T16:15:14.413Z","modified":"2026-07-08T21:26:02.470852Z","cvss":{"score":9.8,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},"epss":{"score":0.02068,"percentile":0.7969,"asOf":"2026-08-23"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Maven","name":"com.mikesamuel:json-sanitizer","fixedVersion":"1.2.2"}],"fix":{"url":"https://github.com/OWASP/json-sanitizer/commit/a37f594f7378a1c76b3283e0dab9e1ab1dc0247e","label":"OWASP/json-sanitizer@a37f594"},"references":[{"type":"ADVISORY","url":"https://groups.google.com/g/json-sanitizer-support/c/dAW1AeNMoA0"},{"type":"FIX","url":"https://github.com/OWASP/json-sanitizer/commit/a37f594f7378a1c76b3283e0dab9e1ab1dc0247e"},{"type":"FIX","url":"https://github.com/OWASP/json-sanitizer/compare/v1.2.1...v1.2.2"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-08T21:26:02.470852Z"}}