GHSA-3wrr-7qpf-2prh
jackson-databind: Deeply nested JsonNode throws StackOverflowError for toString()
At a glance
- Published
- Updated
- CVE
- CVE-2026-50193
- CVSS_V3
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- CVSS_V4
- CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
Description
### Impact Potential Denial-of-Service when attacker sends deeply nested JSON if (and only if) service: 1. Reads deeply nested (1000s of levels) JSON as `JsonNode` (ObjectMapper.readTree()) 2. Writes out same (or modifided) node using `JsonNode.toString()` which can consume significant amount of resources with concurrent relatively small requests (1000 nested arrays is 2kB). ### Patches Fixed in 2.14.0 via https://github.com/FasterXML/jackson-databind/issues/3447. ### Workarounds Avoid serializing `JsonNode` using `toString()`: use ObjectMapper.writeValueAsString(node)
Affected packages
| Package | Versions |
|---|---|
| Maven · com.fasterxml.jackson.core:jackson-databind | introduced 2.10.0, fixed 2.14.0 |
References
- https://github.com/FasterXML/jackson-databind/security/advisories/GHSA-3wrr-7qpf-2prh WEB
- https://nvd.nist.gov/vuln/detail/CVE-2026-50193 ADVISORY
- https://github.com/FasterXML/jackson-databind/issues/3447 WEB
- https://github.com/FasterXML/jackson-databind/commit/a1fa4ae4ecf5cee16da465985f135f3e81816f8c WEB
- https://github.com/FasterXML/jackson-databind PACKAGE
Sources
| Source | Licence |
|---|---|
| OSV.dev | CC-BY 4.0 — GitHub Advisory Database |