Machine-written summary
Summary written by Claude Haiku from the source advisory. Not reviewed by a person.
Versions 3.0.0 up to but not including 3.1.0 of jackson-core (tools.jackson.core:jackson-core) do not enforce the maxNestingDepth limit when parsing JSON from a java.io.DataInput source, and a similar gap exists in ReaderBasedJsonParser. An attacker who can supply a deeply nested JSON document to an application that parses it can trigger a StackOverflowError, causing a denial of service. Upgrade to jackson-core 3.1.0 or later; the source gives no workaround beyond avoiding untrusted input.
Not analysed yet
We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.
Severity and exploitation
| Score | Rating | CVSS | Vector | Source |
|---|---|---|---|---|
| 8.7 | High | 4.0 | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N | CNA (GitHub_M) |
- CISA KEV Not listed.
- EPSS 0.0061, the 49th percentile, on 8 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.
Timeline
- 3 Mar 2026, 21:55 UTC Published by the maintainers as a GitHub repository advisory
- 31 Oct 2026, 14:17 UTC First seen by agentprime
- 31 Oct 2026, 14:17 UTC Confirmed by OSV
Sources
- GitHub Advisory Database: GHSA-6v53-7c9g-w56r
- OSV: GHSA-6v53-7c9g-w56r
- github.com/FasterXML/jackson-core/security/advisories/GHSA-6v53-7c9g-w56r
- github.com/FasterXML/jackson-core/security/advisories/GHSA-h46c-h94j-95f3
- nvd.nist.gov/vuln/detail/CVE-2025-52999
- nvd.nist.gov/vuln/detail/CVE-2026-29062
- github.com/FasterXML/jackson-core/pull/1554
- github.com/FasterXML/jackson-core/commit/8b25fd67f20583e75fb09564ce1eaab06cd5a902
- github.com/FasterXML/jackson-core