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    4 vulnerabilities found for Mediawiki - WikiLambda Extension by Wikimedia Foundation

    CVE-2026-100383 (GCVE-0-2026-100383)

    Vulnerability from nvd – Published: 2026-09-25 21:05 – Updated: 2026-09-26 22:51
    VLAI
    Title
    Stored i18n XSS in WikiLambda's VisualEditor integration
    Summary
    Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Wikimedia Foundation Mediawiki - WikiLambda Extension allows Cross-Site Scripting (XSS). This issue affects Mediawiki - WikiLambda Extension: 1.47.0-alpha. The issue has been remediated on the `master` branch.
    Severity
    4.8 (Medium)
    CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-09-26 22:43 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-2026-100377 (GCVE-0-2026-100377)

    Vulnerability from nvd – Published: 2026-09-25 20:47 – Updated: 2026-09-26 22:51
    VLAI
    Title
    Revision-deleted pages can be viewed through WikiLambda's action=edit and Special:ViewAbstract
    Summary
    Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Wikimedia Foundation Mediawiki - WikiLambda Extension allows Excavation. This issue affects Mediawiki - WikiLambda Extension: 1.47.0-alpha. The issue has been remediated on the `master` branch.
    Severity
    6.9 (Medium)
    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
    SSVC
    Exploitation: none Automatable: yes Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-09-26 22:42 UTC
    CWE
    • CWE-200 - Exposure of Sensitive Information to an Unauthorized Actor
    Assigner
    References
    Impacted products
    Credits
    SomeRandomDeveloper
    Show details on NVD website
    To clipboard 

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    CVE-2026-100383 (GCVE-0-2026-100383)

    Vulnerability from cvelistv5 – Published: 2026-09-25 21:05 – Updated: 2026-09-26 22:51
    VLAI
    Title
    Stored i18n XSS in WikiLambda's VisualEditor integration
    Summary
    Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Wikimedia Foundation Mediawiki - WikiLambda Extension allows Cross-Site Scripting (XSS). This issue affects Mediawiki - WikiLambda Extension: 1.47.0-alpha. The issue has been remediated on the `master` branch.
    Severity
    4.8 (Medium)
    CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-09-26 22:43 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-2026-100377 (GCVE-0-2026-100377)

    Vulnerability from cvelistv5 – Published: 2026-09-25 20:47 – Updated: 2026-09-26 22:51
    VLAI
    Title
    Revision-deleted pages can be viewed through WikiLambda's action=edit and Special:ViewAbstract
    Summary
    Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Wikimedia Foundation Mediawiki - WikiLambda Extension allows Excavation. This issue affects Mediawiki - WikiLambda Extension: 1.47.0-alpha. The issue has been remediated on the `master` branch.
    Severity
    6.9 (Medium)
    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
    SSVC
    Exploitation: none Automatable: yes Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-09-26 22:42 UTC
    CWE
    • CWE-200 - Exposure of Sensitive Information to an Unauthorized Actor
    Assigner
    References
    Impacted products
    Credits
    SomeRandomDeveloper
    Show details on NVD website
    To clipboard 

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          "url": "https://phabricator.wikimedia.org/T430601"
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        {
          "url": "https://gerrit.wikimedia.org/r/c/mediawiki/extensions/WikiLambda/+/1320186"
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      "source": {
        "discovery": "UNKNOWN"
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      "title": "Revision-deleted pages can be viewed through WikiLambda\u0027s action=edit and Special:ViewAbstract",
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    "dateReserved": "2026-09-25T19:28:11.982Z",
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