| Name | CVE-2026-54513 |
| 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. |
| Source | CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| Debian Bugs | 1145887 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| jackson-databind (PTS) | bookworm, bookworm (security) | 2.14.0-1+deb12u1 | vulnerable |
| trixie (security), trixie | 2.14.0+ds-1+deb13u1 | vulnerable | |
| forky, sid | 2.14.0+ds-2 | vulnerable |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| jackson-databind | source | (unstable) | (unfixed) | 1145887 |
https://github.com/FasterXML/jackson-databind/security/advisories/GHSA-rmj7-2vxq-3g9f
https://github.com/FasterXML/jackson-databind/issues/5981
https://github.com/FasterXML/jackson-databind/pull/5983
https://github.com/FasterXML/jackson-databind/pull/5984
https://github.com/FasterXML/jackson-databind/commit/01d1692c8d0ed03e51a0e3c4f8a9e6908e4931e5 (jackson-databind-2.18.8)
https://github.com/FasterXML/jackson-databind/commit/24529da29fdf46ff94ca38de9ebf31cd188f5e8e (jackson-databind-3.1.4)