CVE-2026-54513
No exploitation reported by the sources we read.
- Published2026-06-23
- Fixed in3.1.4 · 2.21.4 · 2.18.8
- WeaknessCWE-184
Am I affected?
Debian, Ubuntu or Red Hat sometimes backport a fix without changing the upstream version number: such a version reads « to verify », never « affected ».With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.
Description
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.
Timeline
dates in UTC- 2026-06-2321:17CVE publishedNVD
Observed activity
isMalicious corpus · updated 2026-10-23 18:48 UTCBlock these indicators
- Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2026-54513?format=txt
- CSV export: https://api.ismalicious.com/edl/cve/CVE-2026-54513?format=csv
- TAXII collection of exploited CVEs
- The EDL and CSV take an API key on the Pro plan.
Versions per branch
NVD| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 3.x | ≥ 3.0.0, < 3.1.4 | 3.1.4 | NVD |
| 2.x | ≥ 2.19.0, < 2.21.4 | 2.21.4 | NVD |
| 2.x | ≥ 2.10.0, < 2.18.8 | 2.18.8 | NVD |
as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.
Distribution builds and vendor advisories
Packages from OSV.dev and products from the vendors' CSAF advisories.
version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.
Vendor advisories
Red Hat Security Advisory: Apicurio Registry (container images) release and security update [ 3.3.3 GA ]
Red Hat Security Advisory: Red Hat JBoss Enterprise Application Platform 8.1.8 security update
Red Hat Security Advisory: Red Hat JBoss Enterprise Application Platform 8.1.8 security update
Red Hat Security Advisory: Red Hat JBoss Enterprise Application Platform 8.1.8 security update
Red Hat Security Advisory: Red Hat JBoss Enterprise Application Platform 8.1.8 security update
Red Hat Security Advisory: AMQ Clients 2026.Q3
22 more advisories
Fix
- Update Fasterxml jackson-databind to 3.1.4 · 2.21.4 · 2.18.8
- Vendor fix Red Hat Product Security RHSA-2026:76637 · 1 productBefore applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258
- Vendor fix Red Hat Product Security RHSA-2026:70277 · 1 productBefore applying the update, make sure all previously released errata relevant to your system have been applied. Also, back up your existing installation, including all applications, configuration files, databases and database settings. For details on how to apply this update, refer to: https://acce…
- Vendor fix Red Hat Product Security RHSA-2026:66545 · 1 productBefore applying the update, back up your existing installation, including all applications, configuration files, databases and database settings. The References section of this erratum contains a download link (you must log in to download the update).
- Vendor fix Red Hat Product Security RHSA-2026:62260 · 8 productsBefore applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258
- Vendor fix Red Hat Product Security RHSA-2026:50849 · 9 productsBefore applying the update, back up your existing installation, including all applications, configuration files, databases and database settings, and so on.
- Vendor fix Red Hat Product Security RHSA-2026:48095 · 32 productsFor details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
Advisories and patches
- github.comPatch
- github.comPatch
- github.comPatch
- github.comPatch
- github.comPatch · Vendor Advisory
Detection
- Nuclei template
- none so far ProjectDiscovery
- Exploit-DB
- no entry Exploit-DB
- Proof-of-concept repositories
- none listed PoC-in-GitHub
Sources
Technical details
- CVSS v3 Vector
- CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
- Published
- 2026-06-23
- Last Modified
- 2026-09-14
- NVD status
- Modified
Frequently asked questions
What is CVE-2026-54513?
Is CVE-2026-54513 actively exploited?
What is the CVSS score for CVE-2026-54513?
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Related vulnerabilities
Same product first, then the same vendor advisory and the same publication week.