High severity · published Mar 6, 2026
CVE-2026-29062
jackson-core contains core low-level incremental ("streaming") parser and generator abstractions used by Jackson Data Processor
7.5
CVSS
0.6%
EPSS
No
On KEV
Description
jackson-core contains core low-level incremental ("streaming") parser and generator abstractions used by Jackson Data Processor. From version 3.0.0 to before version 3.1.0, the UTF8DataInputJsonParser, which is used when parsing from a java.io.DataInput source, bypasses the maxNestingDepth constraint (default: 500) defined in StreamReadConstraints. A similar issue was found in ReaderBasedJsonParser. This allows a user to supply a JSON document with excessive nesting, which can cause a StackOverflowError when the structure is processed, leading to a Denial of Service (DoS). This issue has been patched in version 3.1.0.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.6% · higher than 47% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
JA
Jackson-core · Fasterxml
3.0.0 before 3.1.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-29062
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-29062
Patch
https://github.com/FasterXML/jackson-core/commit/8b25fd67f20583e75fb09564ce1eaab06cd5a902
Issue Tracking
https://github.com/FasterXML/jackson-core/pull/1554
Patch
https://github.com/FasterXML/jackson-core/security/advisories/GHSA-6v53-7c9g-w56r
access.redhat.com
https://access.redhat.com/security/cve/CVE-2026-29062
bugzilla.redhat.com
https://bugzilla.redhat.com/show_bug.cgi?id=2445135
security.access.redhat.com
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-29062.json
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