AVideo: Unauthenticated Disclosure of CloneSite myKey via Error Echo in cloneClient.json.php Enables Cross-Site DB Dump of the Configured Clone Server

Exploitation

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

CVSS

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

EPSS

• CVE-2026-43873: 0.32% estimated exploitation activity in the next 30 days; percentile 25.25 (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 plugin/CloneSite/cloneClient.json.php echoes the local CloneSite shared secret ($objClone-myKey, a constant md5($global['systemRootPath'] . $global['salt'])) into the HTTP response body on every unauthenticated request. The unauthenticated error branch was intended to reject non-admin callers without a valid key, but the rejection message interpolates the expected key before die(). When the victim has CloneSite configured with a remote cloneSiteURL (standard federation/backup setup), the leaked myKey is exactly the credential that authenticates the victim to that remote server's cloneServer.json.php, allowing the attacker to impersonate the victim and trigger a full mysqldump of the remote's database to the remote's public videos/clones/ directory. Details 1. The leak (plugin/CloneSite/cloneClient.json.php:51-60) Under PHP's web SAPI, the script-scope $argv global is not populated from the query string (only $SERVER['argv'] is populated, and only when registerargcargv=On).…

Published by the source

5 May 2026, 18:58 UTC

Last modified by the source

13 May 2026, 14:19 UTC

Source last checked

26 Oct 2026, 14:40 UTC

1. Revision 1 · created · 26 Oct 2026

   Published from ghsa record GHSA-qm9p-p5pw-jrx2

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# Patch Next advisory brief: CVE-2026-43873

Advisory: AVideo: Unauthenticated Disclosure of CloneSite `myKey` via Error Echo in `cloneClient.json.php` Enables Cross-Site DB Dump of the Configured Clone Server
IDs: CVE-2026-43873, GHSA-qm9p-p5pw-jrx2
Record: https://patchnext.com/advisories/cve-2026-43873 (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: High (CVSS 7.5)
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-qm9p-p5pw-jrx2 (GitHub-reviewed advisory GHSA-qm9p-p5pw-jrx2 lists affected ranges: Packagist wwbn/avideo >=0 <=29.0)

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