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    CVE-2026-21331

    Adobe Connect versions 2025.3, 12.10 and earlier are affected by a reflected Cross-Site Scripting (XSS) vulnerability. If an attacker is able to convince a victim to visit a URL referencing a vulnerable page, malicious JavaScript content may be executed within the context of the victim's browser. Scope is changed.

    Published:Apr 14, 2026
    Last Modified:Apr 22, 2026
    EPS:Apr 14, 2026
    EPSS Score:0.00075
    CVSS Score:6.1

    Affected Products

    Vendor
    Adobe
    Product
    Adobe Connect
    Vendor
    Adobe
    Product
    Connect
    Vendor
    Adobe
    Product
    Connect Desktop Application
    Vendor
    Apple
    Product
    Macos
    Vendor
    Microsoft
    Product
    Windows

    Exploits

    No exploit reference

    Related CVEs

    CVE-2026-34659 (CVSS 9.6) — Adobe Connect versions 2025.9.15, 2025.8.157 and earlier are affected by a Deserialization of Untrusted Data v…
    CVE-2026-34660 (CVSS 9.3) — Adobe Connect versions 2025.9.15, 2025.8.157 and earlier are affected by an Incorrect Authorization vulnerabil…
    CVE-2026-27303 (CVSS 9.6) — Adobe Connect versions 2025.3, 12.10 and earlier are affected by a Deserialization of Untrusted Data vulnerabi…
    CVE-2026-34617 (CVSS 8.7) — Adobe Connect versions 2025.3, 12.10 and earlier are affected by a Cross-Site Scripting (XSS) vulnerability th…
    CVE-2026-27246 (CVSS 9.3) — Adobe Connect versions 2025.3, 12.10 and earlier are affected by a DOM-based Cross-Site Scripting (XSS) vulner…
    CVE-2026-34614 (CVSS 6.1) — Adobe Connect versions 2025.3, 12.10 and earlier are affected by a reflected Cross-Site Scripting (XSS) vulner…
    CVE-2026-27245 (CVSS 9.3) — Adobe Connect versions 2025.3, 12.10 and earlier are affected by a reflected Cross-Site Scripting (XSS) vulner…
    CVE-2026-34615 (CVSS 9.3) — Adobe Connect versions 2025.3, 12.10 and earlier are affected by a Deserialization of Untrusted Data vulnerabi…
    CVE-2026-27243 (CVSS 9.3) — Adobe Connect versions 2025.3, 12.10 and earlier are affected by a reflected Cross-Site Scripting (XSS) vulner…

    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