HighCVE-2026-68497

    jackson-databind: Duration XMLGregorianCalendar Unbounded Number Parse DoS (CVE-2026-68497)

    Published Last modified Sources: Red Hat, SUSE, BSI, Hersteller, CVE.org, OSV

    What is affected, what to do

    A flaw was found in jackson-databind. An unauthenticated attacker can trigger a denial of service (DoS) by exploiting an unbounded numeric parse vulnerability.

    Update FasterXML Jackson-databind to version 2.18.10, FasterXML Jackson-databind to version 2.21.6, FasterXML Jackson-databind to version 2.22.2.

    Affected
    • FasterXML Jackson-databind lt 2.0.0..2.18.10
    • FasterXML Jackson-databind lt 2.19.0..2.21.6
    • FasterXML Jackson-databind lt 2.22.0..2.22.2
    • FasterXML Jackson-databind lt 3.0.0..3.1.6
    • FasterXML Jackson-databind lt 3.2.0..3.2.2
    Fixed in
    • FasterXML Jackson-databind 2.18.10
    • FasterXML Jackson-databind 2.21.6
    • FasterXML Jackson-databind 2.22.2
    • FasterXML Jackson-databind 3.1.6
    • FasterXML Jackson-databind 3.2.2

    Not sure whether and how you are affected? Ask a question about this vulnerability

    Metrics

    7.5

    Priority

    XIEM Effective CVSS: highest available CVSS rating from NVD and vendor data.

    Source: Vendor (CNA), CVSS v3

    7.5

    CVSS v3

    Severity High on the scale from 0 to 10.

    Source: Red Hat, SUSE, BSI, Hersteller, CVE.org, OSV

    0.6 %

    EPSS score

    Low — model estimates < 1% exploitation likelihood.

    Source: FIRST EPSS, percentile 46.8

    Show all metrics
    Severity
    High
    Priority (0–325)

    The priority score is a consolidated metric that condenses several individual signals into a single, action-guiding ranking: technical severity (CVSS), exploitation likelihood (EPSS), known-exploited status (KEV) and the context of the affected asset. The aim is to answer the only truly important question in vulnerability management: what first?

    Read in glossary
    82.91 Methodology
    Exploit maturity

    An exploit is code or a technique that specifically uses a concrete vulnerability to force unintended behaviour — such as executing code or escalating privileges. It is the tool that turns a theoretical flaw into a practical attack.

    Read in glossary
    no public PoC known
    XIEM Effective CVSS

    XIEM® is the tiered managed-security operating model from NEOSEC and a registered trademark of NEOSEC GmbH. It extends classic SIEM — the central collection, normalisation and correlation of security-relevant events — with endpoint forensics, network visibility and deception technology, and consolidates them into three building tiers: Sentry, Orchestrate and Command.

    Read in glossary
    7.5 Methodology
    CVSS v3

    CVSS is the globally established, open standard for assessing the technical severity of a vulnerability on a scale from 0 to 10. It describes how easily a flaw can be exploited and what damage it can cause — but not how likely its actual exploitation is. CVSS and the complementary EPSS deliberately answer different questions.

    Read in glossary
    7.5
    EPSS score

    The EPSS score is the absolute model output for an individual vulnerability: the estimated probability of real-world exploitation within the next 30 days, expressed as a value between 0 and 1 (i.e. 0 % to 100 %). A score of 0.42 means „the model estimates a 42 % chance of real-world exploitation within 30 days“.

    Read in glossary
    0.6 %
    Low — model estimates < 1% exploitation likelihood.
    EPSS percentile

    The EPSS percentile is the relative position of a vulnerability within all EPSS-scored CVEs, expressed as a value between 0 and 1. A percentile of 0.90 means „this CVE has a higher EPSS score than 90 % of all other scored CVEs“. Unlike the EPSS score, it is not a probability — but a positioning within a ranking.

    Read in glossary
    46.8
    High — this CVE ranks above the median of all CVEs scored today (rank ≥ 36%).
    KEV status

    The KEV catalogue is a list maintained by the US authority CISA of vulnerabilities for which active exploitation in the wild has been confirmed. It answers not the question „how severe?“ but „is it already being attacked?“ — thereby sharply prioritising patching.

    Read in glossary
    —
    Published
    CWE

    CWE is a catalogue of typical weakness types in software and hardware — such as flawed input validation, unsafe memory handling or poor authentication. Where a CVE names a concrete vulnerability in a concrete product, a CWE describes the underlying class of defect.

    Read in glossary
    CWE-400, CWE-1333

    Detection rules

    No NEOSEC detection rule is available for this vulnerability yet.

    Classification under NIS2 and CRA

    Rule-based classification from exploitation status and severity. It does not replace a case-by-case assessment.

    NIS2

    NIS2 is EU Directive (EU) 2022/2555 to raise the level of cybersecurity across the Union. It substantially broadens obligations compared with the first NIS directive: more sectors, mandatory risk management, staged reporting duties and personal accountability of senior management.

    Read in glossary
    High technical severity: assess and remediate the vulnerability in vulnerability handling under Art. 21(2)(e) NIS2 and document the decision.
    CRA

    The CRA is EU Regulation (EU) 2024/2847 setting horizontal cybersecurity requirements for „products with digital elements“ — from industrial controllers and software to connected consumer devices. For the first time manufacturers must ensure security across the entire product lifecycle, handle vulnerabilities and provide security updates.

    Read in glossary
    From 11.12.2027, Annex I Part II CRA requires manufacturers of affected products with digital elements to handle vulnerabilities without delay and provide security updates.
    ISO/IEC 27001

    ISO/IEC 27001 is the internationally leading standard for an information security management system (ISMS). It describes a risk-based, process-oriented framework to systematically plan, implement, review and improve information security.

    Read in glossary
    Control A.8.8, management of technical vulnerabilities: assess relevance to your systems, plan remediation and keep evidence.

    Description

    A flaw was found in jackson-databind. An unauthenticated attacker can trigger a denial of service (DoS) by exploiting an unbounded numeric parse vulnerability. This occurs during the deserialization of `javax.xml.datatype.Duration` or `javax.xml.datatype.XMLGregorianCalendar` fields from JSON strings, where the system processes arbitrarily long numeric components. This can lead to high CPU utilization, potentially saturating server worker threads and making the service unavailable.

    Source: redhat_csaf, suse_csaf, BSI CSAF, BSI WID Portal, GitHub Security Advisories, cvelistv5, OSV (Open Source Vulnerabilities), NVD (NIST), CVE.org (MITRE)

    Affected products

    The following versions are affected. Older releases of the same product line are also vulnerable unless stated otherwise.

    Affected products
    VendorProductAffected versionsFixed in
    FasterXMLjackson-databind
    • 3.2.0 – < 3.2.2
    • 2.19.0 – < 2.21.6
    • 2.0.0 – < 2.18.10
    • 3.0.0 – < 3.1.6
    • 2.22.0 – < 2.22.2
    • 3.2.2
    • 2.21.6
    • 2.18.10
    • 3.1.6
    • 2.22.2
    OracleCommunications
    • 7.5.0
    • 15.0.1.0.0
    • 26.1.202
    • 7.7.0
    • 25.1.100
    • 47.0.0.2.0
    • 7.0.0
    • 6
    • 6.1
    • 7.8.0
    • 24.2.4-25.2.000
    • 7.5.1
    • 25.2.100
    • 8.0-8.1
    • 8.0.1
    • 7.6.0
    • 14
    • 15.1.0.0.0
    • 25.1.200
    • 6.1.1-7.0.0
    • 25.2.200
    • 15.2.0.0.0
    • 11
    • 26.1.200
    • 25.2.202
    • 25.2.201
    • 15.0.0.0.0
    • 8.0-8.3
    • —
    • —
    • —
    • —
    • —
    • —
    • —
    • —
    • —
    • —
    • —
    • —
    • —
    • —
    • —
    • —
    • —
    • —
    • —
    • —
    • —
    • —
    • —
    • —
    • —
    • —
    • —
    • —
    OracleConstruction and Engineering
    • 22.12.0-22.12.15
    • 24.12.0-24.12.16
    • 25.12.0-25.12.9
    • 21.12.0-21.12.18
    • 23.12.0-23.12.16
    • 22.12.0.0-22.12.21.4
    • 23.12.0-23.12.20
    • 21.12.0.0-21.12.21.9
    • 21.12.0-21.12.17
    • 25.12.0-25.12.8
    • —
    • —
    • —
    • —
    • —
    • —
    • —
    • —
    • —
    • —
    OracleFinancial Services Applications
    • 8.1.2.11
    • 8.1.2.5
    • 8.1.2.12
    • 8.0.8.1
    • 8.1.2.6
    • —
    • —
    • —
    • —
    • —

    Weakness classes (CWE)

    • CWE-400Uncontrolled Resource Consumption

      Class

      The product does not properly control the allocation and maintenance of a limited resource.

      Entry at MITRE CWE-400

    • CWE-1333Inefficient Regular Expression Complexity

      Base

      The product uses a regular expression with a worst-case computational complexity that is inefficient and possibly exponential.

      Entry at MITRE CWE-1333

    References & sources

    • github.comGHSA-q4xh-88c3-wmh7Third-party advisory
    • github.comFasterXML/jackson-databind#6127Patch, Issue tracking
    • github.comFix commit (2.x line, forward-merged to the 2.21, 2.22 and 3.x branches)Patch
    • NVD (NIST)vuln/detail/CVE-2026-68497advisory
    • github.comFasterXML/jackson-databindpackage
    • github.comFasterXML/jackson-databind/releases/tag/jackson-databind-2.18.10web
    • github.comFasterXML/jackson-databind/releases/tag/jackson-databind-2.21.6web
    • github.comFasterXML/jackson-databind/releases/tag/jackson-databind-2.22.2web
    • github.comFasterXML/jackson-databind/releases/tag/jackson-databind-3.1.6web
    • github.comFasterXML/jackson-databind/releases/tag/jackson-databind-3.2.2web

    Reanalysis & status changes

    Chronological NVD audit events for this CVE — reanalyses, CVSS updates, CPE diffs.

    1. CVE Modified134c704f-9b21-4f2e-91b3-4a467353bcc0

      • Reference: after https://github.com/FasterXML/jackson-databind/security/advisories/GHSA-q4xh-88c3-wmh7
      • SSVC: after {"id":"CVE-2026-68497","role":"CISA Coordinator","options":[{"exploitation":"poc"},{"automatable":"yes"},{"technicalI…

    2. New CVE Received36c7be3b-2937-45df-85ea-ca7133ea542c

      • Description: after jackson-databind binds a JSON string to a javax.xml.datatype.Duration or javax.xml.datatype.XMLGregorianCalendar field by passing the raw string verbatim to DatatypeFactory.newDuration(value) or newXMLGregorianCalendar(value) in CoreXMLDeserializers.Std._deserialize. These deserializers are registered by default with no opt-in, so a plain ObjectMapper or JsonMapper with no polymorphic typing and no special configuration reaches this path. The XML Schema lexical grammar permits numeric components of arbitrary length, which the JDK materializes through the native BigInteger(String) and BigDecimal(String) constructors, both quadratic in digit count. Because the digits sit inside a JSON string token rather than a JSON number token, jackson-core's StreamReadConstraints.maxNumberLength guard never applies; jackson's own NumberDeserializers call validateIntegerLength or validateFPLength before parsing a stringified number, but the XML datatype deserializer omits that pre-check. An unauthenticated attacker can therefore submit a single request of a few megabytes, such as a Duration value consisting of the letter P followed by several million digits and the letter Y, and force tens of seconds to several minutes of single-threaded CPU work; a handful of concurrent requests can saturate a server's worker threads. This affects com.fasterxml.jackson.core:jackson-databind from 2.0.0 before 2.18.10, from 2.19.0 before 2.21.6, and from 2.22.0 before 2.22.2, and tools.jackson.core:jackson-databind from 3.0.0 before 3.1.6 and from 3.2.0 before 3.2.2. Users should upgrade to 2.18.10, 2.21.6, 2.22.2, 3.1.6, or 3.2.2.
      • CVSS V3.1: after AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
      • CWE: after CWE-400
      • CWE: after CWE-1333
    Embed badge

    Show the severity and KEV status of this vulnerability on your site – with a link back here. The image is updated hourly.

    Badge preview for CVE-2026-68497
    <a href="https://intel.neosec.eu/en/cve/CVE-2026-68497"><img src="https://intel.neosec.eu/badge/cve/CVE-2026-68497.svg?lang=en" alt="CVE-2026-68497 – NEOSEC Intel" height="20"></a>