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    2 vulnerabilities found for plone.app.event by plone

    CVE-2026-55247 (GCVE-0-2026-55247)

    Vulnerability from nvd – Published: 2026-08-28 18:59 – Updated: 2026-08-31 18:48
    VLAI
    Title
    plone.app.event: Denial of service via iCalendar import
    Summary
    plone.app.event provides the event content type for Plone. Prior to versions 5.2.4 and 6.0.1, the iCalendar import in src/plone/app/event/ical/importer.py accepts insufficiently restricted calendar and event URLs, does not adequately bound downloaded bytes or imported events, and commits work per event. A logged-in editor can make the server request internal network resources or local calendar files, exhaust resources and take the site offline, and store a malicious event URL that executes script in another user's browser. The fix restricts accepted URLs, applies MAXIMUM_ICAL_IMPORT_SIZE_BYTES and MAXIMUM_ICAL_IMPORT_EVENTS limits, uses transaction savepoints, and validates event URLs. This issue is fixed in versions 5.2.4 and 6.0.1.
    Severity
    9.1 (Critical)
    CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:H
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-08-31 18:48 UTC
    CWE
    • CWE-400 - Uncontrolled Resource Consumption
    Assigner
    References
    Impacted products
    Vendor Product Version
    plone plone.app.event Affected: < 5.2.4
    Affected: >= 6.0.0, < 6.0.1
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

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    CVE-2026-55247 (GCVE-0-2026-55247)

    Vulnerability from cvelistv5 – Published: 2026-08-28 18:59 – Updated: 2026-08-31 18:48
    VLAI
    Title
    plone.app.event: Denial of service via iCalendar import
    Summary
    plone.app.event provides the event content type for Plone. Prior to versions 5.2.4 and 6.0.1, the iCalendar import in src/plone/app/event/ical/importer.py accepts insufficiently restricted calendar and event URLs, does not adequately bound downloaded bytes or imported events, and commits work per event. A logged-in editor can make the server request internal network resources or local calendar files, exhaust resources and take the site offline, and store a malicious event URL that executes script in another user's browser. The fix restricts accepted URLs, applies MAXIMUM_ICAL_IMPORT_SIZE_BYTES and MAXIMUM_ICAL_IMPORT_EVENTS limits, uses transaction savepoints, and validates event URLs. This issue is fixed in versions 5.2.4 and 6.0.1.
    Severity
    9.1 (Critical)
    CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:H
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-08-31 18:48 UTC
    CWE
    • CWE-400 - Uncontrolled Resource Consumption
    Assigner
    References
    Impacted products
    Vendor Product Version
    plone plone.app.event Affected: < 5.2.4
    Affected: >= 6.0.0, < 6.0.1
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

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