CVE-2026-54513jackson-databind contains the general-purpose data-binding functionality and tree-model for Jackson Data Processor.
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No exploitation reported and no EPSS estimate yet.
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jackson-databind contains the general-purpose data-binding functionality and tree-model for Jackson Data Processor. From 2.10.0 until 2.18.8, 2.21.4, and 3.1.4, BasicPolymorphicTypeValidator.Builder.allowIfSubTypeIsArray() allowlists any array type based only on clazz.isArray(), without validating the array's component (element) type against the configured allowlist. A PTV built with allowIfSubTypeIsArray() plus an explicit concrete-type allowlist therefore still permits EvilType[] even though EvilType is not allowlisted. When Jackson deserializes the elements and no per-element type IDs are present, it instantiates the component type directly with no further PTV check, bypassing the allowlist. This vulnerability is fixed in 2.18.8, 2.21.4, and 3.1.4.
- CVSS
- 8.1 HIGH (v3.1, NVD)CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- CWE-184
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Not given
- NVD analysis
- Modified
- Record last updated
- Sep 14, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
fasterxml jackson-databind fasterxml:jackson-databind | from 2.10.0 before 2.18.8; from 2.19.0 before 2.21.4; from 3.0.0 before 3.1.4 | NVD |
References
- https://github.com/FasterXML/jackson-databind/commit/01d1692c8d0ed03e51a0e3c4f8a9e6908e4931e5patch
- https://github.com/FasterXML/jackson-databind/commit/24529da29fdf46ff94ca38de9ebf31cd188f5e8epatch
- https://github.com/FasterXML/jackson-databind/issues/5981issue-tracking
- https://github.com/FasterXML/jackson-databind/issues/5983issue-tracking, patch
- https://github.com/FasterXML/jackson-databind/pull/5984issue-tracking, patch
- https://github.com/FasterXML/jackson-databind/security/advisories/GHSA-rmj7-2vxq-3g9fpatch, vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:36839
- https://access.redhat.com/errata/RHSA-2026:40895
- https://access.redhat.com/errata/RHSA-2026:41951
- https://access.redhat.com/errata/RHSA-2026:43218
- https://access.redhat.com/errata/RHSA-2026:43400
- https://access.redhat.com/errata/RHSA-2026:44061
- https://access.redhat.com/errata/RHSA-2026:44062
- https://access.redhat.com/errata/RHSA-2026:44063
- https://access.redhat.com/errata/RHSA-2026:44064
- https://access.redhat.com/errata/RHSA-2026:44065
- https://access.redhat.com/errata/RHSA-2026:44066
- https://access.redhat.com/errata/RHSA-2026:44271
- https://access.redhat.com/errata/RHSA-2026:48095
- https://access.redhat.com/errata/RHSA-2026:48151
- https://access.redhat.com/errata/RHSA-2026:50846
- https://access.redhat.com/errata/RHSA-2026:50847
- https://access.redhat.com/errata/RHSA-2026:50848
- https://access.redhat.com/errata/RHSA-2026:50849
- https://access.redhat.com/errata/RHSA-2026:54435
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.