`CVE-2026-54516`

5.3 Medium Protected by RASP

Published 2 months ago. NVD backfills CPE data for days or weeks after publication, and OSV and the exploit indexes lag too. Scope and status here may change.

Description

jackson-databind contains the general-purpose data-binding functionality and tree-model for Jackson Data Processor. From 2.21.0 until 2.21.4 and 3.1.4, POJOPropertiesCollector._renameProperties() allows a property with @JsonProperty("renamed") on the getter and @JsonIgnore on the setter to be renamed rather than dropped. With MapperFeature.INFER_PROPERTY_MUTATORS enabled (default), the private backing field is retained; during deserialization BeanDeserializerFactory.addBeanProps() sees hasField()==true, builds a FieldProperty, and makes the backing field writable. An attacker supplying the renamed JSON key writes the backing field directly, bypassing the @JsonIgnore on the setter. This vulnerability is fixed in 3.1.4.

CWE-915

Exploitation Status

No public exploit

Nothing published shows this CVE being exploited, which is not the same as ruling it out.

CVSS E:U

CISA KEV not listed
CISA Vulnrichment exploitation: none
Indexed PoC none indexed
EPSS 0.45% chance in 30 days

Waratek Defense Posture

Protected by RASP

A Waratek agent blocks this today.

Applicable rule: Promoted to MITIGATED-BY-RASP (security rule): this CVE's description identifies a deserialization vulnerability that can be mitigated by an ARMR deserialization security rule at the JVM level, without requiring a CVE-specific patch. Matched by description (no specific CWE was assigned by NVD).

Protection full a general security rule for the vulnerability class
Action available security rule
Review automated inferred
Record active

Decided by secure-rule-match : A vulnerability class already blocked by an ARMR security rule

Finding Promoted to MITIGATED-BY-RASP (security rule): this CVE's description identifies a deserialization vulnerability that can be mitigated by an ARMR deserialization security rule at the JVM level, without requiring a CVE-specific patch. Matched by description (no specific CWE was assigned by NVD).

Candidate fix https://github.com/FasterXML/jackson-databind/commit/c3d56dd25d52319828147c5b9aeabf2d485c250a : a commit: the change itself

Decided by	`secure-rule-match` : A vulnerability class already blocked by an ARMR security rule
Finding	Promoted to MITIGATED-BY-RASP (security rule): this CVE's description identifies a deserialization vulnerability that can be mitigated by an ARMR deserialization security rule at the JVM level, without requiring a CVE-specific patch. Matched by description (no specific CWE was assigned by NVD).
Candidate fix	https://github.com/FasterXML/jackson-databind/commit/c3d56dd25d52319828147c5b9aeabf2d485c250a : a commit: the change itself

CVSS

5.3 MEDIUM v3.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N 1 metric

VRT selects the newest version's highest entry and publishes it as cvssScore, newest rather than largest because scores are not comparable across versions, and highest rather than first because the first entry is frequently a CNA placeholder scoring 0.0 over NVD's own analysis.

Version Score Band Vector Assigner Type

CVSS 3.1 5.3 MEDIUM CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N security-advisories@github.com Secondary published

Version	Score	Band	Vector	Assigner	Type
CVSS 3.1	5.3	MEDIUM	`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N`	security-advisories@github.com	Secondary	published

Affected Software & Releases

☕ Maven Library Packages

Artifact coordinates and fix boundaries from OSV.dev

Package Coordinate Introduced Fixed Last affected

com.fasterxml.jackson.core:jackson-databind 2.21.0 2.21.4 unbounded

com.fasterxml.jackson.core:jackson-databind 3.0.0 3.1.4 unbounded

tools.jackson.core:jackson-databind 3.0.0 3.1.4 unbounded

Package Coordinate	Introduced	Fixed	Last affected
`com.fasterxml.jackson.core:jackson-databind`	2.21.0	`2.21.4`	unbounded
`com.fasterxml.jackson.core:jackson-databind`	3.0.0	`3.1.4`	unbounded
`tools.jackson.core:jackson-databind`	3.0.0	`3.1.4`	unbounded

🖥️ Product CPEs & Version Ranges

3 product(s) over 5 version claims (uncapped)

Source	Vendor	Product	Scheme	Affected Versions
osv	com.fasterxml.jackson.core	jackson-databind	generic	≥ 2.21.0 and ＜ 2.21.4 · ≥ 3.0.0 and ＜ 3.1.4
nvd	fasterxml	jackson-databind	generic	≥ 2.21.0 and ＜ 2.21.4 · ≥ 3.0.0 and ＜ 3.1.4
osv	tools.jackson.core	jackson-databind	generic	≥ 3.0.0 and ＜ 3.1.4

Source

Vendor

Product

Scheme

Affected Versions

osv

com.fasterxml.jackson.core

jackson-databind

generic

≥ 2.21.0 and ＜ 2.21.4 · ≥ 3.0.0 and ＜ 3.1.4

nvd

fasterxml

jackson-databind

generic

≥ 2.21.0 and ＜ 2.21.4 · ≥ 3.0.0 and ＜ 3.1.4

osv

tools.jackson.core

jackson-databind

generic

≥ 3.0.0 and ＜ 3.1.4

References

URL	Tags
https://github.com/FasterXML/jackson-databind/commit/c3d56dd25d52319828147c5b9aeabf2d485c250a	commit
https://github.com/FasterXML/jackson-databind/security/advisories/GHSA-9fxm-vc8v-hj55	WEB
https://github.com/FasterXML/jackson-databind/pull/5967	WEB
https://github.com/FasterXML/jackson-databind/pull/5968	WEB
https://github.com/FasterXML/jackson-databind/commit/e88cb17006b6af4883b973058f0bb6486e5074af	WEB
https://github.com/FasterXML/jackson-databind	PACKAGE

URL

Timeline

Published 2026-06-23 Last modified 2026-06-27

Published	2026-06-23	By the CVE Program.
NVD record modified	2026-06-27	NVD's own last-modified date for this record.

Published

2026-06-23

By the CVE Program.

NVD record modified

2026-06-27

NVD's own last-modified date for this record.

Pipeline policy audit (15 of 21 rules evaluated)

15 of 21 rules ran. The rest were never reached, because an earlier stage settled the CVE, a distinct claim from a rule that ran and found nothing.

# Rule Outcome Status Detail

identity: Does this identifier describe a vulnerability at all? first match wins

1 rejected no-match CVE Program withdrawal of this identifier

scope: Is the vulnerability ARMR's to address? first match wins

2 armr-patch-file no-match An ARMR patch file on disk for this CVE

3 armr-secure-rule-file no-match An ARMR security-rule template on disk for this CVE

4 manual-classification no-match A researcher's recorded decision for this specific CVE

5 manual classification no-match Manual classification of this CVE in the legacy dataset

6 non-java-upstream no-match A root cause in non-Java code: an OS kernel, a C library, or a bundled runtime

7 oracle-component no-match The defect being in a component of a tracked product the agent does not reach: JavaFX, the Java SE installer, the native WebLogic proxy plug-in. Oracle gives these no CPE of their own and names them only in the description.

8 osv-maven matched Queued for review Maven packages: com.fasterxml.jackson.core:jackson-databind, tools.jackson.core:jackson-databind

9 cna-maven-package not-reached An affected Maven artifact named by the CNA itself

10 known-cpe-product not-reached An NVD CPE naming a product ARMR tracks

11 cna-cpe-product not-reached A CPE the CNA published naming a tracked product. Oracle publishes these on advisory day, months before NVD.

12 oracle-advisory-family not-reached A tracked product family named in Oracle's own risk matrix. CPE cannot carry a suite name, only a module.

13 non-deployable-product not-reached The only affected product being a sealed appliance image, where Java runs but no -javaagent can be attached

14 unmatched-product not-reached No tracked product matched above, and none present at all

disposition: What do we do about one that is? cumulative: every rule gets a turn

15 patch-hint matched Mitigation candidate References include candidate fix URL (commit tier): https://github.com/FasterXML/jackson-databind/commit/c3d56dd25d52319828147c5b9aeabf2d485c250a

16 open-source-maven skipped The affected package being open source on Maven, so the fix can be read

17 poc-derivable skipped An indexed exploit to reverse-engineer, where there is no source to read

18 no-exploit skipped With no fix path, a public exploit, or a CISA record of one

19 secure-rule-match decided it matched Protected by RASP Description mentions "deserialization" — mitigable by an ARMR deserialization security rule (CWE not assigned).

20 below-action-threshold skipped Medium or Low severity, no KEV listing, no PoC clearing the evidence bar, no CISA verdict, no Oracle advisory

21 no-exploit-published skipped A published working exploit for this candidate, not only a proof of concept, a forecast, or nothing at all

What the scope rules read

The products the record named, and whether known-products.yaml tracks them. This is the evidence the scope stage decided on.

Vendor Product Tracked CPE Source

fasterxml jackson-databind tracked cpe:2.3:a:fasterxml:jackson-databind:*:*:*:*:*:*:*:* yaml

Raw stored JSON document for this CVE ↗ · NVD ↗ · CVE.org ↗