CVE-2026-50193

Name	CVE-2026-50193
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.
Source	CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
jackson-databind (PTS)	bullseye	2.12.1-1+deb11u1	vulnerable
	bullseye (security)	2.12.1-1+deb11u2	vulnerable
	bookworm	2.14.0-1	vulnerable
	bookworm (security)	2.14.0-1+deb12u1	vulnerable
	trixie	2.14.0+ds-1	vulnerable
	trixie (security)	2.14.0+ds-1+deb13u1	vulnerable
	forky, sid	2.14.0+ds-2	vulnerable

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
jackson-databind	source	(unstable)	(unfixed)

Notes

https://github.com/FasterXML/jackson-databind/security/advisories/GHSA-3wrr-7qpf-2prh
https://github.com/FasterXML/jackson-databind/issues/3447
Fixed by: https://github.com/FasterXML/jackson-databind/commit/a1fa4ae4ecf5cee16da465985f135f3e81816f8c (jackson-databind-2.14.0-rc1)