CriticalCVE-2026-107249

    Actstream: Improperly Controlled Modification of Dynamically-Determined Object Attributes (CVE-2026-107249)

    Published Last modified Sources: BSI

    Share

    What is affected, what to do

    Improperly Controlled Modification of Dynamically-Determined Object Attributes vulnerability in Drupal Block AJAX allows Object Injection. This issue affects Block AJAX versions: from 0.0.0 to 3.0.2.

    Update Drupal Block AJAX to version 3.0.2.

    Affected
    • Drupal Block AJAX lt *..3.0.2
    Fixed in
    • Drupal Block AJAX 3.0.2

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

    Metrics

    9.8

    Priority

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

    Source: Vendor (CNA), CVSS v3

    9.8

    CVSS v3

    Severity Critical on the scale from 0 to 10.

    Source: BSI

    0.4 %

    EPSS score

    Low — model estimates < 1% exploitation likelihood.

    Source: FIRST EPSS, percentile 33.9

    Show all metrics
    Severity
    Critical
    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
    57.46 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
    9.8 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
    9.8
    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
    0.4 %
    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
    33.9
    Elevated — this CVE ranks above at least 10% of all CVEs scored today.
    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
    CISA assessment (SSVC)
    Exploitation: none known · automatable · Technical impact: total
    Source: CISA Vulnrichment, as of 30 October 2026
    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-915

    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

    Improperly Controlled Modification of Dynamically-Determined Object Attributes vulnerability in Drupal Block AJAX allows Object Injection. This issue affects Block AJAX versions: from 0.0.0 to 3.0.2.

    Source: BSI WID Portal

    Affected products

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

    Affected products
    Affected versionsFixed in
    DrupalActstream
    • 2.1.0 – < 2.1.1
    • < 2.0.1
    • 2.1.1
    • 2.0.1
    DrupalAdvanced Filesystem
    • < 1.0.28
    • 1.0.28
    DrupalAuthenticator Login Plus (2FA)
    • < 1.0.1
    • 1.0.1
    DrupalBlock AJAX
    • < 3.0.2
    • 3.0.2
    DrupalCountry
    • 2.2.0 – < 2.2.1
    • < 2.1.3
    • 2.2.1
    • 2.1.3
    DrupalDKAN
    • 4.1.0 – < 4.1.5
    • < 4.0.4
    • 4.1.5
    • 4.0.4
    DrupalEasy Breadcrumb
    • < 2.0.11
    • 2.0.11
    DrupalECA Helper
    • *.*
    • —
    DrupalEntity Reference Manager (Merge entities)
    • < 1.0.3
    • 1.0.3
    DrupalExamples for Developers
    • < 4.0.7
    • 4.0.7
    DrupalFreelinking
    • < 4.0.3
    • 4.0.3
    DrupalGutenberg
    • 3.0.0 – < 3.0.7
    • < 2.15.0
    • 3.0.7
    • 2.15.0
    DrupalInline Entity Form Dialog
    • < 1.0.6
    • 1.0.6
    DrupalInline Formatter Field
    • < 4.2.0
    • 4.2.0
    DrupalLeaflet
    • < 10.4.13
    • 10.4.13
    DrupalLinked Field
    • < 1.8.0
    • 1.8.0
    DrupalMathJax: LaTeX for Drupal
    • < 4.1.2
    • 4.1.2
    DrupalMenu Link Attributes
    • < 1.8.0
    • 1.8.0
    DrupalOrphans Media
    • *.*
    • —
    DrupalPermissions by Term
    • < 3.1.41
    • 3.1.41
    DrupalRestrict route by IP
    • 2.0.0 – < 2.0.1
    • < 1.3.1
    • 2.0.1
    • 1.3.1
    DrupalSmartLinker AI
    • < 1.0.3
    • 1.0.3
    DrupalTwo Factor Authentication - TFA / Passwordless Login
    • 5.5.0 – < 5.5.2
    • < 5.4.1
    • 5.5.2
    • 5.4.1
    DrupalViews Share
    • < 2.0.1
    • 2.0.1
    DrupalXray Audit
    • 2.0.0 – < 2.0.4
    • 3.0.0 – < 3.1.1
    • < 1.6.3
    • 2.0.4
    • 3.1.1
    • 1.6.3
    Open SourceDrupal
    • ECA Helper
    • Orphans Media
    • —
    • —
    Open SourceDrupal Actstream
    • < 2.0.1
    • < 2.1.1
    • 2.0.1
    • 2.1.1
    Open SourceDrupal Advanced Filesystem
    • < 1.0.28
    • 1.0.28
    Open SourceDrupal Authenticator Login Plus (2FA)
    • < 1.0.1
    • 1.0.1
    Open SourceDrupal Block AJAX
    • < 3.0.2
    • 3.0.2
    Open SourceDrupal Country
    • < 2.1.3
    • < 2.2.1
    • 2.1.3
    • 2.2.1
    Open SourceDrupal DKAN
    • < 4.0.4
    • < 4.1.5
    • 4.0.4
    • 4.1.5
    Open SourceDrupal Easy Breadcrumb
    • < 2.0.11
    • 2.0.11
    Open SourceDrupal Entity Reference Manager (Merge entities)
    • < 1.0.3
    • 1.0.3
    Open SourceDrupal Examples for Developers
    • < 4.0.7
    • 4.0.7
    Open SourceDrupal Freelinking
    • < 4.0.3
    • 4.0.3

    Vendors and products

    Weakness classes (CWE)

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

      Base

      The product receives input from an upstream component that specifies multiple attributes, properties, or fields that are to be initialized or updated in an object, but it does not properly control which attributes can be modified.

      Entry at MITRE CWE-915

    References & sources

    Changes to this CVE

    Who changed this CVE and when: NVD (analysis, affected products, CVSS), the CVE publisher (CNA) and additional providers such as CISA (ADP).

    1. Record modifiedCISA ADP

      CVSS V3.1: AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

      CISA assessment (SSVC): exploitation: none known, automatable: yes

      Show 2 original changes
      Individual changes of this event as published by NVD
      TypeActionBeforeAfter
      CVSSadded
      —
      AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
      SSVC assessmentadded
      —
      {"id":"CVE-2026-107249","role":"CISA Coordinator","options":[{"exploitation":"none"},{"automatable":"yes"},{"technicalImpact":"total"}],"version":"2.0.3","timestamp":"2026-10-30T19:38:22.371059Z"}

      Source identifier: 134c704f-9b21-4f2e-91b3-4a467353bcc0

    2. Receiveddrupal.org

      Weakness type: CWE-915

      Description added or changed

      Show 4 original changes
      Individual changes of this event as published by NVD
      TypeActionBeforeAfter
      Descriptionadded
      —
      Improperly Controlled Modification of Dynamically-Determined Object Attributes vulnerability in Drupal Block AJAX allows Object Injection. This issue affects Block AJAX versions: from 0.0.0 to 3.0.2.
      Weakness type (CWE)added
      —
      CWE-915
      Affected versions (publisher)added
      —
      New affected value received. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/107xxx/CVE-2026-107249.json">CVE-2026-107249</a>
      Referenceadded
      —
      https://www.drupal.org/sa-contrib-2026-192

      Source identifier: mlhess@drupal.org

    Linked CVEs

    Linked CVEs
    MediumCVE-2026-96389Xray Audit - Moderately critical - Access bypass - SA-CONTRIB-2026-2066.5—
    MediumCVE-2026-107312Drupal Examples for Developers: Allocation of Resources Without Limits or Throttling4.3—
    LowCVE-2026-107311Permissions by Term - Moderately critical - Information disclosure - SA-CONTRIB-2026-2143.7—
    MediumCVE-2026-107310Freelinking - Moderately critical - Information Disclosure - SA-CONTRIB-2026-2134.3—
    LowCVE-2026-107309Easy Breadcrumb - Moderately critical - Information disclosure - SA-CONTRIB-2026-2123.7—
    LowCVE-2026-107308Country - Moderately critical - Cross-site scripting - SA-CONTRIB-2026-2113.1—
    MediumCVE-2026-107307SmartLinker AI - Moderately critical - Information disclosure - SA-CONTRIB-2026-2104.3—
    LowCVE-2026-107306Menu Link Attributes - Moderately critical - Cross-site scripting - SA-CONTRIB-2026-2093.8—
    MediumCVE-2026-107268Drupal Two Factor Authentication - TFA / Passwordless Login: Insertion of Sensitive Information Into Sent Data4.3—
    MediumCVE-2026-107267DKAN - Moderately critical - Access bypass - SA-CONTRIB-2026-2085.3—
    MediumCVE-2026-107266Views Share - Moderately critical - Access bypass - SA-CONTRIB-2026-2055.3—
    MediumCVE-2026-107265Leaflet - Moderately critical - Cross site scripting - SA-CONTRIB-2026-2045.4—
    MediumCVE-2026-107264Inline Formatter Field - Moderately critical - Server-side template injection - SA-CONTRIB-2026-2035.4—
    MediumCVE-2026-107263Gutenberg - Moderately critical - Access bypass - SA-CONTRIB-2026-2025.4—
    MediumCVE-2026-107262Advanced Filesystem - Moderately critical - Cross-Site Request Forgery - SA-CONTRIB-2026-2175.3—
    MediumCVE-2026-107261Authenticator Login Plus (2FA) - Moderately critical - Improper authentication - SA-CONTRIB-2026-2014.2—
    MediumCVE-2026-107259Linked Field - Moderately critical - Server-side template injection - SA-CONTRIB-2026-2005.4—
    MediumCVE-2026-107258Inline Entity Form Dialog - Moderately critical - Access bypass - SA-CONTRIB-2026-1995.4—
    MediumCVE-2026-107257Actstream - Critical - Access bypass - SA-CONTRIB-2026-1986.5—
    HighCVE-2026-107255Restrict route by IP - Critical - Access bypass - SA-CONTRIB-2026-2167.3—
    MediumCVE-2026-107254Authenticator Login Plus (2FA) - Critical - Improper authentication - SA-CONTRIB-2026-1974.8—
    MediumCVE-2026-107253Orphans Media - Critical - Unsupported - SA-CONTRIB-2026-1965.9—
    MediumCVE-2026-107252MathJax: LaTeX for Drupal - Critical - Cross site scripting - SA-CONTRIB-2026-1955.4—
    MediumCVE-2026-107251Entity Reference Manager (Merge entities) - Critical - Access bypass - SA-CONTRIB-2026-1946.5—
    Show 2 more CVEs
    Linked CVEs
    MediumCVE-2026-107250ECA Helper - Critical - Unsupported - SA-CONTRIB-2026-1935.9—
    CriticalCVE-2026-107249Block AJAX - Highly critical - PHP object injection - SA-CONTRIB-2026-1929.8—
    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-2026-107249
    <a href="https://intel.neosec.eu/en/cve/CVE-2026-107249"><img src="https://intel.neosec.eu/badge/cve/CVE-2026-107249.svg?lang=en" alt="CVE-2026-107249 – NEOSEC Intel" height="20"></a>