CVE-2026-59171 | BDVDB-2026-400939 Detail
stlearyJSON-java
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.
Impact#
Per CVSS v3.1: confidentiality impact none, integrity impact none, availability impact high. Attack vector: network.
Weaknesses#
References#
- https://github.com/stleary/JSON-java/security/advisories/GHSA-ghc9-756g-vrcv
- https://github.com/stleary/JSON-java/pull/1065
- https://github.com/stleary/JSON-java/pull/1067
- https://github.com/stleary/JSON-java/commit/703ac34a55400f9c50889e3d0c778b6d7962e81c
- https://github.com/stleary/JSON-java/commit/ab92bb9088a37f9e346cd1dda66f6a3c40a201e0
- https://github.com/stleary/JSON-java/commit/fce83c91bb229dde472283dea648a9a8955237fd
- https://github.com/stleary/JSON-java/releases/tag/20260719
Exploit#
No public exploit known
History#
- Version 1Record published in the CVE List.