CVE-2026-50193

jackson-databind: Deeply nested JsonNode throws StackOverflowError for toString()

CVSS 6.3 MEDIUMEPSS 0.5%CWE-400

Vexday Risk Score

13Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 6.3EPSS 0.5%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

23 Jun 2026Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

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.

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

Affected products

FasterXML · jackson-databind

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References

https://github.com/FasterXML/jackson-databind/commit/a1fa4ae4ecf5cee16da465985f135f3e81816f8c https://github.com/FasterXML/jackson-databind/issues/3447 https://github.com/FasterXML/jackson-databind/security/advisories/GHSA-3wrr-7qpf-2prh