{"id":"CVE-2026-59171","published":"2026-11-06T21:17:09.390","lastModified":"2026-11-11T05:19:49.117","description":"JSON-java is a reference implementation of a JSON package in Java. From version 20150729 through 20260522, JSONTokener.nextSimpleValue can accumulate unbounded numeric tokens before JSONObject.stringToNumber passes them to BigInteger or BigDecimal conversion without a length limit. An application that parses attacker-controlled JSON or XML through JSONObject, JSONArray, or XML.toJSONObject can spend super-linear CPU time converting a sufficiently long numeric literal, blocking request-handling threads and causing denial of service. Strict mode and keep-strings settings in JSONParserConfiguration do not prevent the affected conversion path. Version 20260719 limits numeric conversion length.","cvssScore":5.9,"cvssSeverity":"MEDIUM","cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","cwes":["CWE-400","CWE-770"],"vendors":[],"products":[],"references":[{"url":"https://github.com/stleary/JSON-java/commit/703ac34a55400f9c50889e3d0c778b6d7962e81c","tags":[]},{"url":"https://github.com/stleary/JSON-java/commit/ab92bb9088a37f9e346cd1dda66f6a3c40a201e0","tags":[]},{"url":"https://github.com/stleary/JSON-java/commit/fce83c91bb229dde472283dea648a9a8955237fd","tags":[]},{"url":"https://github.com/stleary/JSON-java/pull/1065","tags":[]},{"url":"https://github.com/stleary/JSON-java/pull/1067","tags":[]},{"url":"https://github.com/stleary/JSON-java/releases/tag/20260719","tags":[]},{"url":"https://github.com/stleary/JSON-java/security/advisories/GHSA-ghc9-756g-vrcv","tags":[]},{"url":"https://github.com/stleary/JSON-java/security/advisories/GHSA-ghc9-756g-vrcv","tags":[]}],"exploitRefs":[{"url":"https://github.com/stleary/JSON-java/commit/703ac34a55400f9c50889e3d0c778b6d7962e81c","tags":[]},{"url":"https://github.com/stleary/JSON-java/commit/ab92bb9088a37f9e346cd1dda66f6a3c40a201e0","tags":[]},{"url":"https://github.com/stleary/JSON-java/commit/fce83c91bb229dde472283dea648a9a8955237fd","tags":[]},{"url":"https://github.com/stleary/JSON-java/pull/1065","tags":[]},{"url":"https://github.com/stleary/JSON-java/pull/1067","tags":[]},{"url":"https://github.com/stleary/JSON-java/releases/tag/20260719","tags":[]},{"url":"https://github.com/stleary/JSON-java/security/advisories/GHSA-ghc9-756g-vrcv","tags":[]},{"url":"https://github.com/stleary/JSON-java/security/advisories/GHSA-ghc9-756g-vrcv","tags":[]}],"hasPoc":true,"ai":null}