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Vulnerability record · CVE-2026-29062 · published 6 March 2026

CVE-2026-29062: Fasterxml jackson-core allocation without limits vulnerability

Fasterxml · Jackson Core

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.

8.7 CVSS 4.0 High EPSS 0.76% · top 46.7% CWE-770 · Allocation without limitsCWE-1284 · CWE-1284
8.7CVSS 4.0 base score
0.76%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
6References
15 Jul 2026Last modified by NVD

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:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/FasterXML/jackson-core/commit/8b25fd67f20583e75fb09564ce1eaab06cd5a902 Patch
https://github.com/FasterXML/jackson-core/pull/1554 Issue TrackingPatch
https://github.com/FasterXML/jackson-core/security/advisories/GHSA-6v53-7c9g-w56r PatchVendor Advisory
https://access.redhat.com/security/cve/CVE-2026-29062
https://bugzilla.redhat.com/show_bug.cgi?id=2445135
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-29062.json

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Source: NIST National Vulnerability Database (record CVE-2026-29062), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.