Upstream information

CVE-2026-91776 at MITRE

Description

TypeDeserializerBase._findDeserializer() in FasterXML jackson-databind caches the resolved deserializer under the raw, attacker-supplied type ID. When name-based polymorphism is configured with a fallback, for example @JsonTypeInfo(use = Id.NAME, defaultImpl = ...), every distinct unrecognized type ID resolves to the same fallback deserializer but is retained as its own key in the _deserializers map. That map has no configurable bound and lives for the lifetime of the type deserializer, so an attacker who can repeatedly supply fresh unknown type IDs causes monotonic memory retention across requests. The reporter observed 10,000 retained entries from 10,000 distinct unknown IDs, against a single entry for a control that repeated one unknown ID the same number of times, isolating attacker-controlled key cardinality from request volume. Exploitation requires an application that enables name-based polymorphism with a defaultImpl or equivalent fallback, accepts attacker-influenced type IDs, and reuses a long-lived ObjectMapper across requests. The fix stops caching fallback resolutions for unrecognized IDs and bounds both the number of cached entries and the length of a cacheable type ID.

SUSE information

Overall state of this security issue: Pending

This issue is currently rated as having moderate severity.

CVSS v3 Scores
CVSS detail CNA (HeroDevs) SUSE
Base Score 7.5 5.3
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Attack Vector Network Network
Attack Complexity Low Low
Privileges Required None None
User Interaction None None
Scope Unchanged Unchanged
Confidentiality Impact None None
Integrity Impact None None
Availability Impact High Low
CVSSv3 Version 3.1 3.1
CVSS v4 Scores
CVSS detail SUSE
Base Score 6.9
Vector CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
Attack Vector Network
Attack Complexity Low
Attack Requirements None
Privileges Required None
User Interaction None
Vulnerable System Confidentiality Impact None
Vulnerable System Integrity Impact None
Vulnerable System Availability Impact Low
Subsequent System Confidentiality Impact None
Subsequent System Integrity Impact None
Subsequent System Availability Impact None
CVSSv4 Version 4.0
SUSE Bugzilla entry: 1282491 [NEW]

No SUSE Security Announcements cross referenced.

List of released packages

Product(s) Fixed package version(s) References
openSUSE Tumbleweed
  • jackson-databind >= 2.18.11-1.1
  • jackson-databind-javadoc >= 2.18.11-1.1
 Patchnames:
openSUSE-Tumbleweed-2026-11877

List of packages in QA

Product(s) Package(s)
SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS
  • jackson-annotations >= 2.18.11-150200.3.28.1
  • jackson-core >= 2.18.11-150200.3.30.1
  • jackson-databind >= 2.18.11-150200.3.36.1
  • jackson-dataformat-cbor >= 2.18.11-150200.3.29.1
  • jackson-dataformat-xml >= 2.18.11-150200.5.8.1
SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS
  • jackson-annotations >= 2.18.11-150200.3.28.1
  • jackson-core >= 2.18.11-150200.3.30.1
  • jackson-databind >= 2.18.11-150200.3.36.1
  • jackson-dataformat-cbor >= 2.18.11-150200.3.29.1
  • jackson-dataformat-xml >= 2.18.11-150200.5.8.1
SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS
  • jackson-annotations >= 2.18.11-150200.3.28.1
  • jackson-core >= 2.18.11-150200.3.30.1
  • jackson-databind >= 2.18.11-150200.3.36.1
  • jackson-dataformat-cbor >= 2.18.11-150200.3.29.1
  • jackson-dataformat-xml >= 2.18.11-150200.5.8.1
SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS
  • jackson-annotations >= 2.18.11-150200.3.28.1
  • jackson-core >= 2.18.11-150200.3.30.1
  • jackson-databind >= 2.18.11-150200.3.36.1
  • jackson-dataformat-cbor >= 2.18.11-150200.3.29.1
  • jackson-dataformat-xml >= 2.18.11-150200.5.8.1
SUSE Linux Enterprise Module for Basesystem 15 SP7
  • jackson-annotations >= 2.18.11-150200.3.28.1
  • jackson-core >= 2.18.11-150200.3.30.1
  • jackson-databind >= 2.18.11-150200.3.36.1
  • jackson-dataformat-xml >= 2.18.11-150200.5.8.1
SUSE Linux Enterprise Server 15 SP7
  • jackson-annotations >= 2.18.11-150200.3.28.1
  • jackson-core >= 2.18.11-150200.3.30.1
  • jackson-databind >= 2.18.11-150200.3.36.1
  • jackson-dataformat-xml >= 2.18.11-150200.5.8.1
SUSE Linux Enterprise Desktop 15 SP7
  • jackson-annotations >= 2.18.11-150200.3.28.1
  • jackson-core >= 2.18.11-150200.3.30.1
  • jackson-databind >= 2.18.11-150200.3.36.1
  • jackson-dataformat-xml >= 2.18.11-150200.5.8.1
SUSE Linux Enterprise Server for SAP Applications 15 SP7
  • jackson-annotations >= 2.18.11-150200.3.28.1
  • jackson-core >= 2.18.11-150200.3.30.1
  • jackson-databind >= 2.18.11-150200.3.36.1
  • jackson-dataformat-xml >= 2.18.11-150200.5.8.1
SUSE Linux Enterprise Module for Development Tools 15 SP7
  • jackson-dataformat-cbor >= 2.18.11-150200.3.29.1
SUSE Linux Enterprise Server 15 SP7
  • jackson-dataformat-cbor >= 2.18.11-150200.3.29.1
SUSE Linux Enterprise Desktop 15 SP7
  • jackson-dataformat-cbor >= 2.18.11-150200.3.29.1
SUSE Linux Enterprise Server for SAP Applications 15 SP7
  • jackson-dataformat-cbor >= 2.18.11-150200.3.29.1
SUSE Linux Enterprise Server 15 SP4-LTSS
  • jackson-annotations >= 2.18.11-150200.3.28.1
  • jackson-core >= 2.18.11-150200.3.30.1
  • jackson-databind >= 2.18.11-150200.3.36.1
  • jackson-dataformat-cbor >= 2.18.11-150200.3.29.1
  • jackson-dataformat-xml >= 2.18.11-150200.5.8.1
SUSE Linux Enterprise Server 15 SP4-LTSS
  • jackson-annotations >= 2.18.11-150200.3.28.1
  • jackson-core >= 2.18.11-150200.3.30.1
  • jackson-databind >= 2.18.11-150200.3.36.1
  • jackson-dataformat-cbor >= 2.18.11-150200.3.29.1
  • jackson-dataformat-xml >= 2.18.11-150200.5.8.1
SUSE Linux Enterprise Server 15 SP5-LTSS
  • jackson-annotations >= 2.18.11-150200.3.28.1
  • jackson-core >= 2.18.11-150200.3.30.1
  • jackson-databind >= 2.18.11-150200.3.36.1
  • jackson-dataformat-cbor >= 2.18.11-150200.3.29.1
  • jackson-dataformat-xml >= 2.18.11-150200.5.8.1
SUSE Linux Enterprise Server 15 SP5-LTSS
  • jackson-annotations >= 2.18.11-150200.3.28.1
  • jackson-core >= 2.18.11-150200.3.30.1
  • jackson-databind >= 2.18.11-150200.3.36.1
  • jackson-dataformat-cbor >= 2.18.11-150200.3.29.1
  • jackson-dataformat-xml >= 2.18.11-150200.5.8.1
SUSE Linux Enterprise Server for SAP Applications 15 SP4
  • jackson-annotations >= 2.18.11-150200.3.28.1
  • jackson-core >= 2.18.11-150200.3.30.1
  • jackson-databind >= 2.18.11-150200.3.36.1
  • jackson-dataformat-cbor >= 2.18.11-150200.3.29.1
  • jackson-dataformat-xml >= 2.18.11-150200.5.8.1
SUSE Linux Enterprise Server for SAP Applications 15 SP5
  • jackson-annotations >= 2.18.11-150200.3.28.1
  • jackson-core >= 2.18.11-150200.3.30.1
  • jackson-databind >= 2.18.11-150200.3.36.1
  • jackson-dataformat-cbor >= 2.18.11-150200.3.29.1
  • jackson-dataformat-xml >= 2.18.11-150200.5.8.1

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-annotations In progress
SUSE Linux Enterprise Desktop 15 SP7 jackson-core In progress
SUSE Linux Enterprise Desktop 15 SP7 jackson-databind In progress
SUSE Linux Enterprise Desktop 15 SP7 jackson-dataformat-xml In progress
SUSE Linux Enterprise Desktop 15 SP7 jackson-dataformats-binary In progress
SUSE Linux Enterprise Module for Basesystem 15 SP7 jackson-annotations In progress
SUSE Linux Enterprise Module for Basesystem 15 SP7 jackson-core In progress
SUSE Linux Enterprise Module for Basesystem 15 SP7 jackson-databind In progress
SUSE Linux Enterprise Module for Basesystem 15 SP7 jackson-dataformat-xml In progress
SUSE Linux Enterprise Module for Development Tools 15 SP7 jackson-dataformats-binary In progress
SUSE Linux Enterprise Server 15 SP7 jackson-annotations In progress
SUSE Linux Enterprise Server 15 SP7 jackson-core In progress
SUSE Linux Enterprise Server 15 SP7 jackson-databind In progress
SUSE Linux Enterprise Server 15 SP7 jackson-dataformat-xml In progress
SUSE Linux Enterprise Server 15 SP7 jackson-dataformats-binary In progress
SUSE Linux Enterprise Server 16.0 jackson-annotations In progress
SUSE Linux Enterprise Server 16.0 jackson-core In progress
SUSE Linux Enterprise Server 16.0 jackson-databind In progress
SUSE Linux Enterprise Server 16.1 jackson-databind Affected
SUSE Linux Enterprise Server for SAP Applications 15 SP7 jackson-annotations In progress
SUSE Linux Enterprise Server for SAP Applications 15 SP7 jackson-core In progress
SUSE Linux Enterprise Server for SAP Applications 15 SP7 jackson-databind In progress
SUSE Linux Enterprise Server for SAP Applications 15 SP7 jackson-dataformat-xml In progress
SUSE Linux Enterprise Server for SAP Applications 15 SP7 jackson-dataformats-binary In progress
SUSE Linux Enterprise Server for SAP applications 16.0 jackson-annotations In progress
SUSE Linux Enterprise Server for SAP applications 16.0 jackson-core In progress
SUSE Linux Enterprise Server for SAP applications 16.0 jackson-databind In progress
SUSE Linux Enterprise Server for SAP applications 16.1 jackson-databind Affected
openSUSE Leap 16.0 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-annotations In progress
SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS jackson-core In progress
SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS jackson-databind In progress
SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS jackson-dataformat-xml In progress
SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS jackson-dataformats-binary In progress
SUSE Linux Enterprise High Performance Computing 15 SP5 jackson-databind Affected
SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS jackson-annotations In progress
SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS jackson-core In progress
SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS jackson-databind In progress
SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS jackson-dataformat-xml In progress
SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS jackson-dataformats-binary In progress
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 Server 15 SP4 jackson-databind Affected
SUSE Linux Enterprise Server 15 SP4-LTSS jackson-annotations In progress
SUSE Linux Enterprise Server 15 SP4-LTSS jackson-core In progress
SUSE Linux Enterprise Server 15 SP4-LTSS jackson-databind In progress
SUSE Linux Enterprise Server 15 SP4-LTSS jackson-dataformat-xml In progress
SUSE Linux Enterprise Server 15 SP4-LTSS jackson-dataformats-binary In progress
SUSE Linux Enterprise Server 15 SP5 jackson-databind Affected
SUSE Linux Enterprise Server 15 SP5-LTSS jackson-annotations In progress
SUSE Linux Enterprise Server 15 SP5-LTSS jackson-core In progress
SUSE Linux Enterprise Server 15 SP5-LTSS jackson-databind In progress
SUSE Linux Enterprise Server 15 SP5-LTSS jackson-dataformat-xml In progress
SUSE Linux Enterprise Server 15 SP5-LTSS jackson-dataformats-binary In progress
SUSE Linux Enterprise Server 15 SP6 jackson-databind Affected
SUSE Linux Enterprise Server 15 SP6-LTSS jackson-databind Affected
SUSE Linux Enterprise Server for SAP Applications 15 SP4 jackson-annotations In progress
SUSE Linux Enterprise Server for SAP Applications 15 SP4 jackson-core In progress
SUSE Linux Enterprise Server for SAP Applications 15 SP4 jackson-databind In progress
SUSE Linux Enterprise Server for SAP Applications 15 SP4 jackson-dataformat-xml In progress
SUSE Linux Enterprise Server for SAP Applications 15 SP4 jackson-dataformats-binary In progress
SUSE Linux Enterprise Server for SAP Applications 15 SP5 jackson-annotations In progress
SUSE Linux Enterprise Server for SAP Applications 15 SP5 jackson-core In progress
SUSE Linux Enterprise Server for SAP Applications 15 SP5 jackson-databind In progress
SUSE Linux Enterprise Server for SAP Applications 15 SP5 jackson-dataformat-xml In progress
SUSE Linux Enterprise Server for SAP Applications 15 SP5 jackson-dataformats-binary In progress
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-annotations In progress
SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS jackson-core In progress
SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS jackson-databind In progress
SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS jackson-dataformat-xml In progress
SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS jackson-dataformats-binary In progress
SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS jackson-annotations In progress
SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS jackson-core In progress
SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS jackson-databind In progress
SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS jackson-dataformat-xml In progress
SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS jackson-dataformats-binary In progress
SUSE Linux Enterprise Module for Basesystem 15 SP3 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 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-databindAffected

SUSE Timeline for this CVE

CVE page created: Wed Sep 23 15:47:13 2026
CVE page last modified: Fri Sep 25 16:50:08 2026