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    CVE-2026-43883

    WWBN AVideo is an open source video platform. In versions up to and including 29.0, plugin/PayPalYPT/agreementCancel.json.php cancels a PayPal billing agreement using an attacker-supplied agreement parameter without verifying that the authenticated user owns the agreement. A low-privilege authenticated user who learns or obtains another user's PayPal billing agreement ID can silently suspend the victim's recurring subscription, causing revenue loss to the platform and loss of paid service to the victim. Commit 0da3dcff1eda2f497694bf82b559829471c292c2 contains an updated fix.

    Published:May 11, 2026
    Last Modified:May 11, 2026
    EPS:May 11, 2026
    EPSS Score:
    CVSS Score:4.2

    Affected Products

    Vendor
    Wwbn
    Product
    Avideo

    Exploits

    No exploit reference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

    CVE-2026-89257 (CVSS 5.4) — AVideo through 29.0 contains an insecure direct object reference (IDOR) vulnerability in objects/categoryDelet…
    CVE-2026-89256 (CVSS 8.7) — AVideo through commit c3edcc274c389816d434acadac07ee78eaf330c1 contains a stored cross-site scripting vulnerab…
    CVE-2026-89255 (CVSS 8.7) — AVideo through commit c3edcc274c389816d434acadac07ee78eaf330c1 contains a stored cross-site scripting vulnerab…
    CVE-2026-89254 (CVSS 8.7) — AVideo through commit c3edcc274c389816d434acadac07ee78eaf330c1 contains a stored cross-site scripting vulnerab…
    CVE-2026-89253 (CVSS 8.7) — WWBN AVideo through commit c3edcc274c389816d434acadac07ee78eaf330c1 contains a stored cross-site scripting vul…
    CVE-2026-89252 (CVSS 6.5) — AVideo through commit c3edcc274c389816d434acadac07ee78eaf330c1 fails to verify ownership in addLiveLink.php wh…
    CVE-2026-89251 (CVSS 6.5) — AVideo through commit c3edcc274c389816d434acadac07ee78eaf330c1 fails to validate ad impressions in plugin/AD_S…
    CVE-2026-89250 (CVSS 7.5) — WWBN AVideo through commit c3edcc274c389816d434acadac07ee78eaf330c1 contains an unauthenticated file read vuln…
    CVE-2026-89249 (CVSS 8.7) — AVideo through commit c3edcc274c389816d434acadac07ee78eaf330c1 contains a stored cross-site scripting vulnerab…
    CVE-2026-89248 (CVSS 5.3) — AVideo through commit c3edcc274c389816d434acadac07ee78eaf330c1 is missing an authentication/authorization chec…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High