Upstream information
Description
jackson-databind validates the outer class of a class-name type ID but accepts attacker-selected classes inside its generic arguments, even when those classes violate the declared type or would be rejected as direct type IDs. This bypasses the generic-argument validation added for CVE-2026-54512 (GHSA-j3rv-43j4-c7qm), of which this is an incomplete fix.DatabindContext._resolveAndValidateGeneric() checks the outer class against the declared base type and then passes each argument from the type ID to _validateTypeParameter(), which validates the argument against the outer base type rather than enforcing its corresponding declared generic binding. It also invokes validators with arguments that have not passed the subtype check those validators expect. Under the default DefaultBaseTypeLimitingValidator this accepts an unrelated class inside a generic subtype even when the same class is rejected as a direct type ID. Where an allowIfBaseType(...) rule approves the outer type, Jackson substitutes LaissezFaireSubTypeValidator, so the configured validator no longer restricts the embedded arguments. The element type of a plain array type ID such as [Lpkg.Gadget; is likewise left unvalidated once the array's base type is approved.
Affected paths include annotation-based class-name polymorphism with a default Jackson 3.x JsonMapper, configured default typing in both Jackson 2.x and 3.x, and integrations that expose that default typing. The default-validator case requires no application-authored validator: with @JsonTypeInfo(use = Id.CLASS), a direct gadget type ID is rejected as "Not a subtype", while a type ID naming a generic wrapper around the same gadget is accepted and deserialized, including attacker-supplied bean properties. Where class-name default typing permits Map, a property declared as Map<String,String> accepts HashMap<FileSystemXmlApplicationContext,String>; map-key discovery then passes the attacker-controlled JSON property name to the selected class's one-string constructor. With Spring on the classpath and attacker-controlled XML the application can load, that constructor loads the XML and invokes ProcessBuilder.start() under the application account, giving arbitrary command execution.
This issue affects com.fasterxml.jackson.core:jackson-databind from 2.10.0 and tools.jackson.core:jackson-databind from 3.0.0. Releases before 2.10.0 are not affected, because PolymorphicTypeValidator was introduced in jackson-databind 2.10.0.
SUSE information
Overall state of this security issue: Pending
This issue is currently rated as having critical severity.
| CVSS detail | CNA (HeroDevs) | SUSE |
|---|---|---|
| Base Score | 9.8 | 9.8 |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| Attack Vector | Network | Network |
| Attack Complexity | Low | Low |
| Privileges Required | None | None |
| User Interaction | None | None |
| Scope | Unchanged | Unchanged |
| Confidentiality Impact | High | High |
| Integrity Impact | High | High |
| Availability Impact | High | High |
| CVSSv3 Version | 3.1 | 3.1 |
| CVSS detail | SUSE |
|---|---|
| Base Score | 9.2 |
| Vector | CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N |
| Attack Vector | Network |
| Attack Complexity | Low |
| Attack Requirements | Present |
| Privileges Required | None |
| User Interaction | None |
| Vulnerable System Confidentiality Impact | High |
| Vulnerable System Integrity Impact | High |
| Vulnerable System Availability Impact | High |
| Subsequent System Confidentiality Impact | None |
| Subsequent System Integrity Impact | None |
| Subsequent System Availability Impact | None |
| CVSSv4 Version | 4.0 |
Status of this issue by product and package
Please note that this evaluation state might be work in progress, incomplete or outdated. Also information for service packs in the LTSS phase is only included for issues meeting the LTSS criteria. If in doubt, feel free to contact us for clarification. The updates are grouped by state of their lifecycle. SUSE product lifecycles are documented on the lifecycle page.
| Product(s) | Source package | State |
|---|---|---|
| Products under general support and receiving all security fixes. | ||
| SUSE Linux Enterprise Desktop 15 SP7 | jackson-databind | Affected |
| SUSE Linux Enterprise Module for Basesystem 15 SP7 | jackson-databind | Affected |
| SUSE Linux Enterprise Server 15 SP7 | jackson-databind | Affected |
| SUSE Linux Enterprise Server 16.0 | jackson-databind | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP7 | jackson-databind | Affected |
| SUSE Linux Enterprise Server for SAP applications 16.0 | jackson-databind | Affected |
| openSUSE Leap 16.0 | jackson-databind | Affected |
| openSUSE Leap 16.1 | jackson-databind | Affected |
| Products under Long Term Service Pack support and receiving important and critical security fixes. | ||
| SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS | jackson-databind | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS | jackson-databind | Affected |
| SUSE Linux Enterprise Server 15 SP4-LTSS | jackson-databind | Affected |
| SUSE Linux Enterprise Server 15 SP5-LTSS | jackson-databind | Affected |
| SUSE Linux Enterprise Server 15 SP6-LTSS | jackson-databind | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP4 | jackson-databind | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP5 | jackson-databind | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP6 | jackson-databind | Affected |
| SUSE Manager Server Module 4.3 | jackson-databind | Affected |
| Products past their end of life and not receiving proactive updates anymore. | ||
| SUSE Enterprise Storage 7 | jackson-databind | Affected |
| SUSE Enterprise Storage 7.1 | jackson-databind | Affected |
| SUSE Linux Enterprise Desktop 15 SP2 | jackson-databind | Affected |
| SUSE Linux Enterprise Desktop 15 SP3 | jackson-databind | Affected |
| SUSE Linux Enterprise Desktop 15 SP4 | jackson-databind | Affected |
| SUSE Linux Enterprise Desktop 15 SP5 | jackson-databind | Affected |
| SUSE Linux Enterprise Desktop 15 SP6 | jackson-databind | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP2 | jackson-databind | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP2-ESPOS | jackson-databind | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP2-LTSS | jackson-databind | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP3 | jackson-databind | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP3-ESPOS | jackson-databind | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP3-LTSS | jackson-databind | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP4 | jackson-databind | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS | jackson-databind | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP5 | jackson-databind | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS | jackson-databind | Affected |
| SUSE Linux Enterprise Module for Basesystem 15 SP3 | jackson-databind | Affected |
| SUSE Linux Enterprise Module for Basesystem 15 SP4 | jackson-databind | Affected |
| SUSE Linux Enterprise Module for Basesystem 15 SP5 | jackson-databind | Affected |
| SUSE Linux Enterprise Module for Basesystem 15 SP6 | jackson-databind | Affected |
| SUSE Linux Enterprise Module for Development Tools 15 SP2 | jackson-databind | Affected |
| SUSE Linux Enterprise Module for Development Tools 15 SP3 | jackson-databind | Affected |
| SUSE Linux Enterprise Real Time 15 SP2 | jackson-databind | Affected |
| SUSE Linux Enterprise Real Time 15 SP3 | jackson-databind | Affected |
| SUSE Linux Enterprise Real Time 15 SP4 | jackson-databind | Affected |
| SUSE Linux Enterprise Server 15 SP2 | jackson-databind | Affected |
| SUSE Linux Enterprise Server 15 SP2-BCL | jackson-databind | Affected |
| SUSE Linux Enterprise Server 15 SP2-LTSS | jackson-databind | Affected |
| SUSE Linux Enterprise Server 15 SP3 | jackson-databind | Affected |
| SUSE Linux Enterprise Server 15 SP3-BCL | jackson-databind | Affected |
| SUSE Linux Enterprise Server 15 SP3-LTSS | jackson-databind | Affected |
| SUSE Linux Enterprise Server 15 SP4 | jackson-databind | Affected |
| SUSE Linux Enterprise Server 15 SP5 | jackson-databind | Affected |
| SUSE Linux Enterprise Server 15 SP6 | jackson-databind | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP2 | jackson-databind | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP3 | jackson-databind | Affected |
| SUSE Manager Proxy 4.1 | jackson-databind | Affected |
| SUSE Manager Proxy 4.2 | jackson-databind | Affected |
| SUSE Manager Proxy 4.3 | jackson-databind | Affected |
| SUSE Manager Proxy LTS 4.3 | jackson-databind | Affected |
| SUSE Manager Retail Branch Server 4.1 | jackson-databind | Affected |
| SUSE Manager Retail Branch Server 4.2 | jackson-databind | Affected |
| SUSE Manager Retail Branch Server 4.3 | jackson-databind | Affected |
| SUSE Manager Retail Branch Server LTS 4.3 | jackson-databind | Affected |
| SUSE Manager Server 4.1 | jackson-databind | Affected |
| SUSE Manager Server 4.2 | jackson-databind | Affected |
| SUSE Manager Server 4.3 | jackson-databind | Affected |
| SUSE Manager Server LTS 4.3 | jackson-databind | Affected |
| openSUSE Leap 15.3 | jackson-databind | Affected |
| openSUSE Leap 15.4 | jackson-databind | Affected |
| openSUSE Leap 15.5 | jackson-databind | Affected |
| openSUSE Leap 15.6 | jackson-databind | Affected |
| Container Status | ||
| suse/manager/5.0/x86_64/server suse/manager/5.0/x86_64/server-attestation suse/multi-linux-manager/5.1/x86_64/server suse/multi-linux-manager/5.1/x86_64/server-attestation suse/multi-linux-manager/5.2/x86_64/server suse/multi-linux-manager/5.2/x86_64/server-attestation | jackson-databind | Affected |
SUSE Timeline for this CVE
CVE page created: Fri Oct 23 14:51:44 2026CVE page last modified: Wed Nov 4 17:53:44 2026