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NVD / CVE Program· CNA GitHub_M

CVE-2026-54515: jackson-databind: Case-insensitive deserialization bypasses per-property @JsonIgnoreProperties

Noroxi assessment

Priority: Monitor (action score 21/100)

  • Public proof-of-concept code exists (GitHub); there is no record of exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.44% (FIRST EPSS).
  • Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
  • According to CISA the attack is automatable: targets can be found by mass scanning.
  • Fixed version: FasterXML jackson-databind 2.18.9.

Low priority for now. Upgrade to FasterXML jackson-databind 2.18.9 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

jackson-databind contains the general-purpose data-binding functionality and tree-model for Jackson Data Processor. From 2.8.0 until 2.18.9, 2.21.5, and 3.1.4, in BeanDeserializerBase.createContextual(), per-property @JsonIgnoreProperties exclusions are applied by _handleByNameInclusion(), producing a contextual deserializer whose BeanPropertyMap has the ignored properties removed. The subsequent per-property case-insensitivity block (triggered by @JsonFormat(ACCEPT_CASE_INSENSITIVE_PROPERTIES)) rebuilds from this._beanProperties (the original, unfiltered map) instead of contextual._beanProperties, then overwrites the filtered map — restoring every property _handleByNameInclusion had just removed. The ignored property becomes writable again. This vulnerability is fixed in 2.18.9, 2.21.5, and 3.1.4.

MediumCVSS 5.3 · v3.1—Proof of concept Fix available
Published
Jun 23, 2026
Updated
Oct 25, 2026
EPSS
0.4% · 38th percentile

Report tools

JSON

Action score

21

Monitor

Low priority for now.

CVSS
21 / 40 · 5.3 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.4%

CISA SSVC decision

Exploitation
none
Automatable
yes
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · GitHub_M
5.3
NVD has not scored this yet; the score shown is the CNA’s.

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • Proof of concept exists, no weaponized module
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

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When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
fasterxmljackson-databind

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • fasterxml jackson-databind2.8.0 and later · before 2.18.9
  • fasterxml jackson-databind2.19.0 and later · before 2.21.5
  • fasterxml jackson-databind3.0.0 and later · before 3.1.4
  • fasterxml jackson-databind2.22.0

Versions reported by the vendor

Affected version ranges reported by the assigning authority (GitHub_M). Independent of NVD's CPE analysis and usually ahead of it.

  • FasterXML jackson-databind

    • >= 2.8.0, < 2.18.9, >= 2.19.0, < 2.21.5, >= 3.1.0, < 3.1.4affected

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12jackson-databindfrom 0—
Debian:14jackson-databindbefore 2.18.11-12.18.11-1
Mavencom.fasterxml.jackson.core:jackson-databindfrom 2.19.0 · before 2.21.52.21.5
Mavencom.fasterxml.jackson.core:jackson-databindfrom 2.22.0 · before 2.22.12.22.1
Mavencom.fasterxml.jackson.core:jackson-databindfrom 2.8.0 · before 2.18.92.18.9
Mavencom.fasterxml.jackson.core:jackson-databindfrom 3.1.0 · before 3.1.43.1.4
Maventools.jackson.core:jackson-databindfrom 3.1.0 · before 3.1.43.1.4
openSUSE:Leap 16.0jackson-annotationsbefore 2.18.8-160000.1.12.18.8-160000.1.1
openSUSE:Leap 16.0jackson-annotationsbefore 2.18.9-160000.1.12.18.9-160000.1.1
openSUSE:Leap 16.0jackson-corebefore 2.18.9-160000.1.12.18.9-160000.1.1
openSUSE:Leap 16.0jackson-corebefore 2.18.8-160000.1.12.18.8-160000.1.1
openSUSE:Leap 16.0jackson-databindbefore 2.18.8-160000.1.12.18.8-160000.1.1
openSUSE:Leap 16.0jackson-databindbefore 2.18.9-160000.1.12.18.9-160000.1.1
openSUSE:Tumbleweedjackson-databindbefore 2.18.8-1.12.18.8-1.1
Red Hat:jboss_enterprise_application_platform_els:7.4::el7eap7-activemq-artemisbefore 0:2.16.0-23.redhat_00058.1.el7eap0:2.16.0-23.redhat_00058.1.el7eap
Red Hat:jboss_enterprise_application_platform_els:7.4::el7eap7-activemq-artemis-clibefore 0:2.16.0-23.redhat_00058.1.el7eap0:2.16.0-23.redhat_00058.1.el7eap
Red Hat:jboss_enterprise_application_platform_els:7.4::el7eap7-activemq-artemis-commonsbefore 0:2.16.0-23.redhat_00058.1.el7eap0:2.16.0-23.redhat_00058.1.el7eap
Red Hat:jboss_enterprise_application_platform_els:7.4::el7eap7-activemq-artemis-core-clientbefore 0:2.16.0-23.redhat_00058.1.el7eap0:2.16.0-23.redhat_00058.1.el7eap
Red Hat:jboss_enterprise_application_platform_els:7.4::el7eap7-activemq-artemis-dtobefore 0:2.16.0-23.redhat_00058.1.el7eap0:2.16.0-23.redhat_00058.1.el7eap
Red Hat:jboss_enterprise_application_platform_els:7.4::el7eap7-activemq-artemis-hornetq-protocolbefore 0:2.16.0-23.redhat_00058.1.el7eap0:2.16.0-23.redhat_00058.1.el7eap
Red Hat:jboss_enterprise_application_platform_els:7.4::el7eap7-activemq-artemis-hqclient-protocolbefore 0:2.16.0-23.redhat_00058.1.el7eap0:2.16.0-23.redhat_00058.1.el7eap
Red Hat:jboss_enterprise_application_platform_els:7.4::el7eap7-activemq-artemis-jdbc-storebefore 0:2.16.0-23.redhat_00058.1.el7eap0:2.16.0-23.redhat_00058.1.el7eap
Red Hat:jboss_enterprise_application_platform_els:7.4::el7eap7-activemq-artemis-jms-clientbefore 0:2.16.0-23.redhat_00058.1.el7eap0:2.16.0-23.redhat_00058.1.el7eap
Red Hat:jboss_enterprise_application_platform_els:7.4::el7eap7-activemq-artemis-jms-serverbefore 0:2.16.0-23.redhat_00058.1.el7eap0:2.16.0-23.redhat_00058.1.el7eap

+96

Same product

fasterxml: all records

Other highest-scoring records for the same primary product.

  • CVE-2017-17485FasterXML jackson-databind through 2.8.10 and 2.9.x through 2.9.3 allows unauthenticated remote code execution because of an incomplete fix
    54Plan
  • CVE-2017-7525A deserialization flaw was discovered in the jackson-databind, versions before 2.6.7.1, 2.7.9.1 and 2.8.9, which could allow an unauthentica
    50Plan
  • CVE-2020-8840FasterXML jackson-databind 2.0.0 through 2.9.10.2 lacks certain xbean-reflect/JNDI blocking, as demonstrated by org.apache.xbean.propertyedi
    47Plan

Published before and after this one in the same product

  • ← EarlierCVE-2026-54513Jun 23, 2026 · jackson-databind: Array subtype allowlist bypass in BasicPolymorphicTypeValidator (allowIfSubTypeIsArray)
    32Monitor
  • ← EarlierCVE-2026-54514Jun 23, 2026 · jackson-databind: InetSocketAddress deserialization triggers eager DNS resolution (SSRF)
    21Monitor
  • Later →CVE-2026-54516Jun 23, 2026 · jackson-databind: Renamed @JsonIgnore'd setters can deserialize via private fields
    21Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
FasterXML jackson-databind2.18.9 · descriptionVendor (CNA)
debian:jackson-databind2.18.11-1 · Debian:14Package registry (OSV)
Maven:com.fasterxml.jackson.core:jackson-databind2.18.9Package registry (OSV)
Maven:com.fasterxml.jackson.core:jackson-databind2.21.5Package registry (OSV)
Maven:com.fasterxml.jackson.core:jackson-databind2.22.1Package registry (OSV)
Maven:com.fasterxml.jackson.core:jackson-databind3.1.4Package registry (OSV)
Maven:tools.jackson.core:jackson-databind3.1.4Package registry (OSV)
opensuse:jackson-annotations2.18.8-160000.1.1 · openSUSE:Leap 16.0Package registry (OSV)
opensuse:jackson-core2.18.8-160000.1.1 · openSUSE:Leap 16.0Package registry (OSV)
opensuse:jackson-databind2.18.8-1.1 · openSUSE:TumbleweedPackage registry (OSV)
red hat:eap7-activemq-artemis0:2.16.0-23.redhat_00058.1.el7eap · Red Hat:jboss_enterprise_application_platform_els:7.4::el7Package registry (OSV)
red hat:eap7-activemq-artemis-cli0:2.16.0-23.redhat_00058.1.el7eap · Red Hat:jboss_enterprise_application_platform_els:7.4::el7Package registry (OSV)
red hat:eap7-activemq-artemis-commons0:2.16.0-23.redhat_00058.1.el7eap · Red Hat:jboss_enterprise_application_platform_els:7.4::el7Package registry (OSV)
red hat:eap7-activemq-artemis-core-client0:2.16.0-23.redhat_00058.1.el7eap · Red Hat:jboss_enterprise_application_platform_els:7.4::el7Package registry (OSV)
red hat:eap7-activemq-artemis-dto0:2.16.0-23.redhat_00058.1.el7eap · Red Hat:jboss_enterprise_application_platform_els:7.4::el7Package registry (OSV)
red hat:eap7-activemq-artemis-hornetq-protocol0:2.16.0-23.redhat_00058.1.el7eap · Red Hat:jboss_enterprise_application_platform_els:7.4::el7Package registry (OSV)
red hat:eap7-activemq-artemis-hqclient-protocol0:2.16.0-23.redhat_00058.1.el7eap · Red Hat:jboss_enterprise_application_platform_els:7.4::el7Package registry (OSV)
red hat:eap7-activemq-artemis-jdbc-store0:2.16.0-23.redhat_00058.1.el7eap · Red Hat:jboss_enterprise_application_platform_els:7.4::el7Package registry (OSV)
red hat:eap7-activemq-artemis-jms-client0:2.16.0-23.redhat_00058.1.el7eap · Red Hat:jboss_enterprise_application_platform_els:7.4::el7Package registry (OSV)
red hat:eap7-activemq-artemis-jms-server0:2.16.0-23.redhat_00058.1.el7eap · Red Hat:jboss_enterprise_application_platform_els:7.4::el7Package registry (OSV)
red hat:eap7-activemq-artemis-journal0:2.16.0-23.redhat_00058.1.el7eap · Red Hat:jboss_enterprise_application_platform_els:7.4::el7Package registry (OSV)
red hat:eap7-activemq-artemis-ra0:2.16.0-23.redhat_00058.1.el7eap · Red Hat:jboss_enterprise_application_platform_els:7.4::el7Package registry (OSV)
suse:jackson-annotations2.18.8-160000.1.1 · SUSE:Linux Enterprise Server 16.0Package registry (OSV)
suse:jackson-core2.18.8-160000.1.1 · SUSE:Linux Enterprise Server 16.0Package registry (OSV)
suse:jackson-databind2.18.8-160000.1.1 · SUSE:Linux Enterprise Server 16.0Package registry (OSV)
suse:jackson-dataformats-binary2.18.8-150200.3.21.3 · SUSE:Linux Enterprise Module for Development Tools 15 SP7Package registry (OSV)

Exploit status

Proof of concept available

A public proof of concept or detection signature exists. Exploit knowledge is out there; don't delay patching.

Evidence

  • Proof-of-concept repository on GitHub ×1

Noroxi does not host or link to exploit code. Metasploit module names and Nuclei template ids are shown (names, not code); Exploit-DB entries and PoC repositories are given as counts only.

Public exploit evidence
SourceKindDate
Proof-of-concept repository on GitHubstars:02026-08-07

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

  1. Published
  2. First PoC+44 d
  3. TodayNov 4, 2026+134 d

No history yet (it accumulates with the daily EPSS job).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

  • CVE-2026-5988821 days apartjackson-databind: @JsonIgnore on a Record property is bypassed with a PropertyNamingStrategy
    26Monitor
  • CVE-2026-545160 days apartjackson-databind: Renamed @JsonIgnore'd setters can deserialize via private fields
    21Monitor

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
none
Integrity
low · data or configuration can be modified
Availability
none
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
None
Integrity impact
Low
Availability impact
None

Weakness class (CWE)

CWE-915 · Improperly Controlled Modification of Dynamically-Determined Object Attributes

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

nvd-secondary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (3 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records