CVE-2026-33684 is a medium-severity missing authorization vulnerability in wwbn/avideo (composer), affecting versions < 29.0. It is fixed in 29.0.
Summary The setapisignUp method in the API plugin accepts emailVerified, canUpload, canStream, and canCreateMeet parameters from user-supplied input and applies them to newly created accounts without verifying that the request was authenticated with a valid APISecret. Any anonymous user who can solve a CAPTCHA can self-grant elevated permissions during account registration. Details The authentication check in setapisignUp (plugin/API/API.php:4222) allows either a valid APISecret (admin-level credential) or a solved CAPTCHA (anonymous access): After this check, both code paths (APISecret and CAPTCHA) reach the privilege parameter handling unconditionally: These $global values are then consumed by User::save() (objects/user.php:829-840), which overrides the user object's permission fields: Note that even though userCreate.json.php:90 sets canUpload from the site's default configuration, User::save() subsequently overrides it with the attacker-controlled $global value. The codebase already uses self::isAPISecretValid() to guard admin-only operations in other API methods (e.g., lines 294, 991, 1664, 2150), but this check is missing for the privilege parameters in setapisignUp. PoC Impact Email verification bypass: Attackers can mark their accounts as email-verified without owning the email address, bypassing any email-gated functionality Unauthorized upload access: Self-granted upload permissions allow uploading potentially malicious video content to the platform Unauthorized streaming access: Self-granted streaming permissions allow unauthorized live streaming Unauthorized meeting creation: Self-granted meet permissions allow creating meetings on the platform Policy bypass: Platform administrators who intentionally restrict these permissions for new users (e.g., requiring manual approval before granting upload rights) have their access controls circumvented Recommended Fix Wrap the privilege parameter handling in an isAPISecretValid() check so that only admin-authenticated requests can set these values:
The application does not perform an authorization check before performing a sensitive operation. Typical impact: unauthorized access to restricted functionality or data.
CVE-2026-33684 has a CVSS score of 5.3 (Medium). The vector is network-reachable, no privileges required, and no user interaction. A CVSS score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether this affects your application depends on whether the vulnerable code is present and reachable in your environment.
A fixed version is available (29.0). Upgrading removes the vulnerable code path.
composer
wwbn/avideo (< 29.0)wwbn/avideo → 29.0 (composer)Severity tells you how bad this could be in the worst case. It does not tell you whether you are exposed. Exploitability and impact are functions of runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A vulnerable package can sit in your dependency tree and never run.
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CVE-2026-33684 is a medium-severity missing authorization vulnerability in wwbn/avideo (composer), affecting versions < 29.0. It is fixed in 29.0. The application does not perform an authorization check before performing a sensitive operation.
CVE-2026-33684 has a CVSS score of 5.3 (Medium). This score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether it represents real risk in your environment depends on whether the vulnerable code is present and reachable.
wwbn/avideo (composer) versions < 29.0 is affected.
Yes. CVE-2026-33684 is fixed in 29.0. Upgrade to this version or later.
Whether CVE-2026-33684 is exploitable in your environment depends on whether the vulnerable code is present and reachable. A CVSS score is a worst-case rating; it does not account for your specific deployment, configuration, or usage patterns. Kodem, an Intelligent Application Security platform, uses runtime intelligence to show which vulnerabilities actually execute in production, so you can focus on the ones that represent real risk. Get a demo
Exploitability and impact are not fixed properties of a CVE. They depend on runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A high CVSS score on a dependency that never runs is not the same as real risk. Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter.
Upgrade wwbn/avideo to 29.0 or later.