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VulnerabilityPublished Updated

CVE-2026-54512: jackson-databind contains the general-purpose data-binding functionality and tree-model for Jackson

Affects jackson-databindSource GCVE Database

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Authoritative record:CVE-2026-54512· High 8.1

Not known to be exploited · CVSS 8.1 High · fixed in 2.18.8 : patch jackson-databind soon.

Data as of 5 Nov 2026, 00:01 UTC

CVSS 3.1 base score
8.1High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
1.0% chance of exploitation in 30 days – higher than 64% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 2.18.8
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 23 Jun 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 4 Nov 2026.

What to do

Affected software

ProductAffectedFixed in
Ubuntu 26.10jackson-databindpkg:deb/ubuntu/jackson-databind?arch=source&distro=stonkingOther threatsAffected
  • =2.14.0+ds-1build1
  • =2.14.0+ds-2
Fixed in–
Ubuntu 26.04 LTSjackson-databindpkg:deb/ubuntu/jackson-databind?arch=source&distro=resoluteOther threatsAffected
  • =2.14.0+ds-1
  • =2.14.0+ds-1build1
Fixed in–
Ubuntu 25.10jackson-databindpkg:deb/ubuntu/jackson-databind?arch=source&distro=questingOther threatsAffected
  • =2.14.0+ds-1
Fixed in–
Ubuntu 24.04 LTSjackson-databindpkg:deb/ubuntu/jackson-databind?arch=source&distro=nobleOther threatsAffected
  • =2.14.0-1
Fixed in–
Ubuntu 22.04 LTSjackson-databindpkg:deb/ubuntu/jackson-databind?arch=source&distro=jammyOther threatsAffected
  • 2.12.1-1 – 2.13.0-2
4 affected builds
Fixed in–
Ubuntu 20.04 LTSjackson-databindpkg:deb/ubuntu/jackson-databind?arch=source&distro=focalOther threatsAffected
  • 2.9.9.3-1 – 2.10.2-1
4 affected builds
Fixed in–

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

Upgrade jackson-databind to version 2.18.8, 2.21.4, or 3.1.4 or later, where this vulnerability is fixed. No other mitigation is indicated by the vendor advisory. Users should ensure that polymorphic typing is carefully controlled and avoid using vulnerable versions.

Description

A vulnerability in jackson-databind affects its polymorphic deserialization safety mechanism. From versions 2.10.0 up to but not including 2.18.8, 2.21.4, and 3.1.4, the PolymorphicTypeValidator (PTV) fails to validate nested generic type parameters, allowing an attacker controlling the type ID to bypass allow-lists and instantiate arbitrary classes. This can lead to remote code execution or other severe impacts. The issue is fixed in versions 2.18.8, 2.21.4, and 3.1.4.

References

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