CVE-2026-50193
jackson-databind: Deeply nested JsonNode throws StackOverflowError for toString()
Description
jackson-databind contains the general-purpose data-binding functionality and tree-model for Jackson Data Processor. From 2.13.0 until 2.14.0, a potential Denial-of-Service exists when attacker sends deeply nested JSON if (and only if) the service reads deeply nested (1000s of levels) JSON as JsonNode (ObjectMapper.readTree()) and writes out same (or modifided) node using JsonNode.toString(). This can consume significant amount of resources with concurrent relatively small requests (1000 nested arrays is 2kB). This vulnerability is fixed in 2.14.0.
INFO
Published Date :
June 23, 2026, 9 p.m.
Last Modified :
June 23, 2026, 9 p.m.
Remotely Exploit :
No
Source :
GitHub_M
Solution
- Update jackson-databind to version 2.14.0 or later.
- Avoid reading deeply nested JSON as JsonNode.
- Avoid writing modified nodes using JsonNode.toString().
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