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    8 vulnerabilities found for Mediawiki - WikiLambda Extension by The Wikimedia Foundation

    CVE-2026-103046 (GCVE-0-2026-103046)

    Vulnerability from nvd – Published: 2026-09-29 22:41 – Updated: 2026-09-30 20:01
    VLAI
    Title
    WikifunctionsFragmentRenderer does unsafe string replacements on user-provided HTML
    Summary
    Improper neutralization of input during web page generation ('cross-site scripting') vulnerability in Wikimedia Foundation MediaWiki - WikiLambda extension allows Stored XSS. This issue affects MediaWiki - WikiLambda extension: before 1.46.1.
    Severity
    6.1 (Medium)
    CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-09-30 18:15 UTC
    CWE
    • CWE-79 - Improper neutralization of input during web page generation ('cross-site scripting')
    Assigner
    References
    Impacted products
    Date Public
    2026-09-29 22:32
    Credits
    SomeRandomDeveloper James Forrester
    Show details on NVD website
    To clipboard 

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    CVE-2026-96872 (GCVE-0-2026-96872)

    Vulnerability from nvd – Published: 2026-09-23 18:50 – Updated: 2026-09-23 19:35
    VLAI
    Title
    WikiLambda public function execution bypasses the unsaved-code permission through nested Z825 compositions
    Summary
    Improper handling of insufficient permissions or privileges vulnerability in The Wikimedia Foundation Mediawiki - WikiLambda Extension on Linux, MacOS, and Windows allows Accessing Functionality Not Properly Constrained by ACLs. This issue affects Mediawiki - WikiLambda Extension: before 1.47.0.
    Severity
    2.9 (Low)
    CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N/E:P/AU:Y
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-09-23 19:34 UTC
    CWE
    • CWE-280 - Improper handling of insufficient permissions or privileges
    Assigner
    References
    Impacted products
    Date Public
    2026-09-23 17:15
    Credits
    bombobombone
    Show details on NVD website
    To clipboard 

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    CVE-2026-58517 (GCVE-0-2026-58517)

    Vulnerability from nvd – Published: 2026-07-01 18:23 – Updated: 2026-07-01 18:35
    VLAI
    Title
    Blocked users can create and edit WikiLambda objects
    Summary
    Improper neutralization of input terminators vulnerability in The Wikimedia Foundation Mediawiki - WikiLambda Extension allows Authentication Bypass. This issue affects Mediawiki - WikiLambda Extension: from * before 1.43.9,1.44.6,1.45.4.
    Severity
    6.9 (Medium)
    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L
    SSVC
    Exploitation: none Automatable: yes Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-07-01 18:34 UTC
    CWE
    • CWE-288 - Authentication bypass using an alternate path or channel
    Assigner
    References
    Impacted products
    Vendor Product Version
    The Wikimedia Foundation Mediawiki - WikiLambda Extension Affected: * , < 1.43.9,1.44.6,1.45.4 (semver)
    		Create a notification for this product.
    Credits
    SomeRandomDeveloper Jdforrester-WMF
    Show details on NVD website
    To clipboard 

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    CVE-2025-62695 (GCVE-0-2025-62695)

    Vulnerability from nvd – Published: 2025-10-21 04:02 – Updated: 2025-10-21 14:08
    VLAI
    Title
    Stored XSS through system messages
    Summary
    Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in The Wikimedia Foundation Mediawiki - WikiLambda Extension allows Stored XSS.This issue affects Mediawiki - WikiLambda Extension: master.
    Severity
    6.9 (Medium)
    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L
    SSVC
    Exploitation: poc Automatable: yes Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2025-10-21 13:45 UTC
    CWE
    • CWE-79 - Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting')
    Assigner
    References
    Impacted products
    Credits
    SomeRandomDeveloper
    Show details on NVD website
    To clipboard 

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    CVE-2026-103046 (GCVE-0-2026-103046)

    Vulnerability from cvelistv5 – Published: 2026-09-29 22:41 – Updated: 2026-09-30 20:01
    VLAI
    Title
    WikifunctionsFragmentRenderer does unsafe string replacements on user-provided HTML
    Summary
    Improper neutralization of input during web page generation ('cross-site scripting') vulnerability in Wikimedia Foundation MediaWiki - WikiLambda extension allows Stored XSS. This issue affects MediaWiki - WikiLambda extension: before 1.46.1.
    Severity
    6.1 (Medium)
    CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-09-30 18:15 UTC
    CWE
    • CWE-79 - Improper neutralization of input during web page generation ('cross-site scripting')
    Assigner
    References
    Impacted products
    Date Public
    2026-09-29 22:32
    Credits
    SomeRandomDeveloper James Forrester
    Show details on NVD website
    To clipboard 

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    CVE-2026-96872 (GCVE-0-2026-96872)

    Vulnerability from cvelistv5 – Published: 2026-09-23 18:50 – Updated: 2026-09-23 19:35
    VLAI
    Title
    WikiLambda public function execution bypasses the unsaved-code permission through nested Z825 compositions
    Summary
    Improper handling of insufficient permissions or privileges vulnerability in The Wikimedia Foundation Mediawiki - WikiLambda Extension on Linux, MacOS, and Windows allows Accessing Functionality Not Properly Constrained by ACLs. This issue affects Mediawiki - WikiLambda Extension: before 1.47.0.
    Severity
    2.9 (Low)
    CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N/E:P/AU:Y
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-09-23 19:34 UTC
    CWE
    • CWE-280 - Improper handling of insufficient permissions or privileges
    Assigner
    References
    Impacted products
    Date Public
    2026-09-23 17:15
    Credits
    bombobombone
    Show details on NVD website
    To clipboard 

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    CVE-2026-58517 (GCVE-0-2026-58517)

    Vulnerability from cvelistv5 – Published: 2026-07-01 18:23 – Updated: 2026-07-01 18:35
    VLAI
    Title
    Blocked users can create and edit WikiLambda objects
    Summary
    Improper neutralization of input terminators vulnerability in The Wikimedia Foundation Mediawiki - WikiLambda Extension allows Authentication Bypass. This issue affects Mediawiki - WikiLambda Extension: from * before 1.43.9,1.44.6,1.45.4.
    Severity
    6.9 (Medium)
    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L
    SSVC
    Exploitation: none Automatable: yes Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-07-01 18:34 UTC
    CWE
    • CWE-288 - Authentication bypass using an alternate path or channel
    Assigner
    References
    Impacted products
    Vendor Product Version
    The Wikimedia Foundation Mediawiki - WikiLambda Extension Affected: * , < 1.43.9,1.44.6,1.45.4 (semver)
    		Create a notification for this product.
    Credits
    SomeRandomDeveloper Jdforrester-WMF
    Show details on NVD website
    To clipboard 

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    CVE-2025-62695 (GCVE-0-2025-62695)

    Vulnerability from cvelistv5 – Published: 2025-10-21 04:02 – Updated: 2025-10-21 14:08
    VLAI
    Title
    Stored XSS through system messages
    Summary
    Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in The Wikimedia Foundation Mediawiki - WikiLambda Extension allows Stored XSS.This issue affects Mediawiki - WikiLambda Extension: master.
    Severity
    6.9 (Medium)
    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L
    SSVC
    Exploitation: poc Automatable: yes Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2025-10-21 13:45 UTC
    CWE
    • CWE-79 - Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting')
    Assigner
    References
    Impacted products
    Credits
    SomeRandomDeveloper
    Show details on NVD website
    To clipboard 

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            "baseSeverity": "MEDIUM",
            "privilegesRequired": "NONE",
            "providerUrgency": "NOT_DEFINED",
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            "subConfidentialityImpact": "LOW",
            "subIntegrityImpact": "LOW",
            "userInteraction": "NONE",
            "valueDensity": "NOT_DEFINED",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L",
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              "value": "GENERAL"
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              "cweId": "CWE-79",
              "description": "CWE-79 Improper Neutralization of Input During Web Page Generation (XSS or \u0027Cross-site Scripting\u0027)",
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              "type": "CWE"
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      "providerMetadata": {
        "dateUpdated": "2025-10-21T04:02:00.666Z",
        "orgId": "c4f26cc8-17ff-4c99-b5e2-38fc1793eacc",
        "shortName": "wikimedia-foundation"
      },
      "references": [
        {
          "url": "https://phabricator.wikimedia.org/T400500"
        },
        {
          "url": "https://gerrit.wikimedia.org/r/c/mediawiki/extensions/WikiLambda/+/1173952"
        }
      ],
      "source": {
        "discovery": "UNKNOWN"
      },
      "title": "Stored XSS through system messages",
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    "assignerShortName": "wikimedia-foundation",
    "cveId": "CVE-2025-62695",
    "datePublished": "2025-10-21T04:02:00.666Z",
    "dateReserved": "2025-10-20T17:42:38.150Z",
    "dateUpdated": "2025-10-21T14:08:56.363Z",
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}