Vulnerability · Published Jun 23, 2026 · Assigned by GitHub_M
CVE-2026-50193jackson-databind: Deeply nested JsonNode throws StackOverflowError for toString()
Medium 6.3
In plain English
A medium-severity uncontrolled resource consumption in jackson-databind from FasterXML. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 50% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | jackson-databind | 2.14.0-1 | DEBIAN-CVE-2026-50193 |
| Debian:13 | jackson-databind | 2.14.0-1 | DEBIAN-CVE-2026-50193 |
| Debian:14 | jackson-databind | 2.14.0-1 | DEBIAN-CVE-2026-50193 |
| Maven | com.fasterxml.jackson.core:jackson-databind | 2.14.0 | GHSA-3wrr-7qpf-2prh |
| Ubuntu:22.04:LTS | jackson-databind | no fix listed | UBUNTU-CVE-2026-50193 |
| Ubuntu:25.10 | jackson-databind | no fix listed | UBUNTU-CVE-2026-50193 |
| Ubuntu:26.10 | jackson-databind | no fix listed | UBUNTU-CVE-2026-50193 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| FasterXML | jackson-databind | >= 2.10.0, < 2.14.0 |
Weakness: CWE-400 · Vector: 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