CVE-2026-54516: jackson-databind contains the general-purpose data-binding functionality and tree-model for Jackson Data Proce

Routine

MEDIUM 5.3REMOTEUPGRADE

CVE-2026-54516 is a medium-severity flaw (CVSS 5.3) affecting jackson-databind. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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 Bea

Why this priority

Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	5.3 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.4% (top 61%)
CISA exploited list	No
Weakness	CWE-915
Published	2026-06-23
Last modified	2026-10-25

Publisher (CNA): GitHub, Inc. · Vendor: fasterxml

Last updated 2026-10-25 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-06-23 21:17 UTCPublished CVE record published
2026-10-25 23:10 UTCUpdated Record last modified

fasterxml jackson-databind UPGRADE

Affected: >= 2.21.0 and < 2.21.4 · >= 3.0.0 and < 3.1.4

Fixed in: 2.21.4, 3.1.4

Safe to downgrade to: a release before 2.21.0

1. Check installed version

apt-cache policy jackson-databind || rpm -q jackson-databind || jackson-databind --version

2. UPGRADE to 2.21.4 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade jackson-databind

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade jackson-databind

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

3. If no update is available yet, DOWNGRADE to a release before 2.21.0 (Debian / Ubuntu)

apt-cache madison jackson-databind sudo apt install jackson-databind=<VERSION_BEFORE_2.21.0> sudo apt-mark hold jackson-databind

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list jackson-databind sudo dnf downgrade jackson-databind-<VERSION_BEFORE_2.21.0> sudo dnf versionlock add jackson-databind

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-54516?

jackson-databind: upgrade to 2.21.4, 3.1.4. Exact commands for each OS are on this page.

Is CVE-2026-54516 being exploited?

CVE-2026-54516 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-54516 affect?

CVE-2026-54516 affects jackson-databind. Severity is medium (CVSS 5.3). 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("rename

How urgent is CVE-2026-54516?

Priority 33/100. Remotely exploitable, no login, no user action

Related CVEs

CVE-2026-54512 HIGH 8.1 UPGRADE jackson-databind contains the general-purpose data-binding functionality and tree-model for Jackson Data Proce
CVE-2026-54513 HIGH 8.1 UPGRADE jackson-databind contains the general-purpose data-binding functionality and tree-model for Jackson Data Proce
CVE-2026-50193 HIGH 7.5 UPGRADE jackson-databind contains the general-purpose data-binding functionality and tree-model for Jackson Data Proce
CVE-2026-54518 MEDIUM 6.5 UPGRADE jackson-databind contains the general-purpose data-binding functionality and tree-model for Jackson Data Proce
CVE-2026-54515 MEDIUM 5.3 UPGRADE jackson-databind contains the general-purpose data-binding functionality and tree-model for Jackson Data Proce

References

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