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    6 vulnerabilities found for Mediawiki - CheckUser extension by Wikimedia Foundation

    CVE-2025-53479 (GCVE-0-2025-53479)

    Vulnerability from cvelistv5 – Published: 2025-07-08 17:16 – Updated: 2025-07-10 13:18
    VLAI
    Title
    CheckUser: Reflected Cross-Site Scripting (XSS) in Special:CheckUser via unsanitized internationalized message
    Summary
    The CheckUser extension’s Special:CheckUser interface is vulnerable to reflected XSS via the rev-deleted-user message. This message is rendered without proper escaping, making it possible to inject JavaScript through the uselang=x-xss language override mechanism. This issue affects Mediawiki - CheckUser extension: from 1.42.X before 1.42.7, from 1.43.X before 1.43.2.
    Severity
    5.4 (Medium)
    CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
    SSVC
    Exploitation: poc Automatable: no Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-79 - Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting')
    Assigner
    References
    Impacted products
    Vendor Product Version
    Wikimedia Foundation Mediawiki - CheckUser extension Affected: 1.42.x , < 1.42.7 (semver)
    Affected: 1.43.x , < 1.43.2 (semver)
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

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            "url": "https://phabricator.wikimedia.org/T394693"
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        "title": "CISA ADP Vulnrichment"
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    CVE-2025-53480 (GCVE-0-2025-53480)

    Vulnerability from cvelistv5 – Published: 2025-07-08 14:58 – Updated: 2025-07-08 20:44
    VLAI
    Title
    CheckUser: Reflected Cross-Site Scripting (XSS) in Special:Investigate (Account information tab) via unsanitized i18n messages
    Summary
    The CheckUser extension’s Special:Investigate page has a vulnerability in the Account information tab, where specific internationalized messages are rendered without proper escaping. Attackers can exploit this by appending ?uselang=x-xss to the URL, causing reflected XSS when the UI renders affected message keys. This issue affects Mediawiki - CheckUser extension: from 1.39.X before 1.39.13, from 1.42.X before 1.42.7, from 1.43.X before 1.43.2.
    Severity
    5.4 (Medium)
    CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-79 - Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting')
    Assigner
    References
    Impacted products
    Vendor Product Version
    Wikimedia Foundation Mediawiki - CheckUser extension Affected: 1.39.x , < 1.39.13 (semver)
    Affected: 1.42.x , < 1.42.7 (semver)
    Affected: 1.43.x , < 1.43.2 (semver)
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

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    CVE-2025-53478 (GCVE-0-2025-53478)

    Vulnerability from cvelistv5 – Published: 2025-07-07 18:16 – Updated: 2025-07-07 20:49
    VLAI
    Title
    CheckUser: Reflected Cross-Site Scripting (XSS) in Special:Investigate via unsanitized i18n messages
    Summary
    The CheckUser extension’s Special:Investigate interface is vulnerable to reflected XSS due to improper escaping of certain internationalized system messages rendered on the “IPs and User agents” tab. This issue affects Mediawiki - CheckUser extension: from 1.39.X before 1.39.13, from 1.42.X before 1.42.7, from 1.43.X before 1.43.2.
    Severity
    5.4 (Medium)
    CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-79 - Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting')
    Assigner
    References
    Impacted products
    Vendor Product Version
    Wikimedia Foundation Mediawiki - CheckUser extension Affected: 1.39.x , < 1.39.13 (semver)
    Affected: 1.42.x , < 1.42.7 (semver)
    Affected: 1.43.x , < 1.43.2 (semver)
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

    {
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      {
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          {
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    CVE-2025-53479 (GCVE-0-2025-53479)

    Vulnerability from nvd – Published: 2025-07-08 17:16 – Updated: 2025-07-10 13:18
    VLAI
    Title
    CheckUser: Reflected Cross-Site Scripting (XSS) in Special:CheckUser via unsanitized internationalized message
    Summary
    The CheckUser extension’s Special:CheckUser interface is vulnerable to reflected XSS via the rev-deleted-user message. This message is rendered without proper escaping, making it possible to inject JavaScript through the uselang=x-xss language override mechanism. This issue affects Mediawiki - CheckUser extension: from 1.42.X before 1.42.7, from 1.43.X before 1.43.2.
    Severity
    5.4 (Medium)
    CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
    SSVC
    Exploitation: poc Automatable: no Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-79 - Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting')
    Assigner
    References
    Impacted products
    Vendor Product Version
    Wikimedia Foundation Mediawiki - CheckUser extension Affected: 1.42.x , < 1.42.7 (semver)
    Affected: 1.43.x , < 1.43.2 (semver)
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

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    CVE-2025-53480 (GCVE-0-2025-53480)

    Vulnerability from nvd – Published: 2025-07-08 14:58 – Updated: 2025-07-08 20:44
    VLAI
    Title
    CheckUser: Reflected Cross-Site Scripting (XSS) in Special:Investigate (Account information tab) via unsanitized i18n messages
    Summary
    The CheckUser extension’s Special:Investigate page has a vulnerability in the Account information tab, where specific internationalized messages are rendered without proper escaping. Attackers can exploit this by appending ?uselang=x-xss to the URL, causing reflected XSS when the UI renders affected message keys. This issue affects Mediawiki - CheckUser extension: from 1.39.X before 1.39.13, from 1.42.X before 1.42.7, from 1.43.X before 1.43.2.
    Severity
    5.4 (Medium)
    CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-79 - Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting')
    Assigner
    References
    Impacted products
    Vendor Product Version
    Wikimedia Foundation Mediawiki - CheckUser extension Affected: 1.39.x , < 1.39.13 (semver)
    Affected: 1.42.x , < 1.42.7 (semver)
    Affected: 1.43.x , < 1.43.2 (semver)
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

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    CVE-2025-53478 (GCVE-0-2025-53478)

    Vulnerability from nvd – Published: 2025-07-07 18:16 – Updated: 2025-07-07 20:49
    VLAI
    Title
    CheckUser: Reflected Cross-Site Scripting (XSS) in Special:Investigate via unsanitized i18n messages
    Summary
    The CheckUser extension’s Special:Investigate interface is vulnerable to reflected XSS due to improper escaping of certain internationalized system messages rendered on the “IPs and User agents” tab. This issue affects Mediawiki - CheckUser extension: from 1.39.X before 1.39.13, from 1.42.X before 1.42.7, from 1.43.X before 1.43.2.
    Severity
    5.4 (Medium)
    CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-79 - Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting')
    Assigner
    References
    Impacted products
    Vendor Product Version
    Wikimedia Foundation Mediawiki - CheckUser extension Affected: 1.39.x , < 1.39.13 (semver)
    Affected: 1.42.x , < 1.42.7 (semver)
    Affected: 1.43.x , < 1.43.2 (semver)
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

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