AVideo: Unauthenticated User Enumeration in objects/users.json.php via isCompany Parameter Allows Bypass of the Admin-Only Listing Restriction

Exploitation

No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.

CVSS

5.3 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

EPSS

• CVE-2026-43881: 0.32% estimated exploitation activity in the next 30 days; percentile 24.89 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.

As published by the source; long descriptions are shortened.

Summary objects/users.json.php exposes two unauthenticated paths that disclose the full set of registered user accounts. The isCompany request parameter causes the handler to set $ignoreAdmin = true for any non-admin caller (including unauthenticated visitors), which defeats the admin-only guard inside User::getAllUsers()/User::getTotalUsers(). A second path accepts usersid and calls User::getUserFromID() directly with no permission check, producing a single-user oracle. Both paths return id, identification (display name), channel URL, photo, background, and status, plus the total account count. Details Root cause #1 — isCompany admin bypass objects/users.json.php:13-53 (HEAD, v29.0): User::isACompany() with no argument (objects/user.php:1629-1646) returns !empty($SESSION['user']['iscompany']), which is false for unauthenticated visitors. So the anonymous-attacker branch takes the else arm: $isCompany = 1; $ignoreAdmin = true;. The admin-only guards in User::getAllUsers()…

Published by the source

5 May 2026, 22:02 UTC

Last modified by the source

13 May 2026, 14:20 UTC

Source last checked

26 Oct 2026, 14:40 UTC

1. Revision 1 · created · 26 Oct 2026

   Published from ghsa record GHSA-6rvw-7p8v-mjfq

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# Patch Next advisory brief: CVE-2026-43881

Advisory: AVideo: Unauthenticated User Enumeration in objects/users.json.php via isCompany Parameter Allows Bypass of the Admin-Only Listing Restriction
IDs: CVE-2026-43881, GHSA-6rvw-7p8v-mjfq
Record: https://patchnext.com/advisories/cve-2026-43881 (revision 1, source checked 26 Oct 2026, 14:40 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: Medium (CVSS 5.3)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor response not established. A vendor fix does not mean a deployment is fixed.

## Affected components
- Packagist wwbn/avideo: affected <= 29.0

## Suggested inspection (read-only)
- Packagist wwbn/avideo: check the installed version with your package manager.

## Supported action
No complete vendor fix is recorded. Follow the primary source's mitigation guidance and check this record again before closing anything.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on wwbn/avideo.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://github.com/advisories/GHSA-6rvw-7p8v-mjfq (GitHub-reviewed advisory GHSA-6rvw-7p8v-mjfq lists affected ranges: Packagist wwbn/avideo >=0 <=29.0)

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