AVideo: Arbitrary Stripe Subscription Cancellation via Debug Endpoint and retrieveSubscriptions() Bug

Exploitation

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

CVSS

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

EPSS

• CVE-2026-34737: 0.29% estimated exploitation activity in the next 30 days; percentile 21.20 (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 The StripeYPT plugin includes a test.php debug endpoint that is accessible to any logged-in user, not just administrators. This endpoint processes Stripe webhook-style payloads and triggers subscription operations, including cancellation. Due to a bug in the retrieveSubscriptions() method that cancels subscriptions instead of merely retrieving them, any authenticated user can cancel arbitrary Stripe subscriptions by providing a subscription ID. Details At plugin/StripeYPT/test.php:4, the endpoint checks only for a logged-in user, not for admin privileges: At lines 27-29, the endpoint accepts a JSON payload from the request and processes it through the Stripe metadata handler: The call chain proceeds as follows: - test.php calls getMetadataOrFromSubscription() - Which calls getSubscriptionId() to extract the subscription ID - Which calls retrieveSubscriptions() to interact with the Stripe API At StripeYPT.php:933, the retrieveSubscriptions() method contains a critical bug…

Published by the source

1 Apr 2026, 21:06 UTC

Last modified by the source

2 Apr 2026, 11:32 UTC

Source last checked

26 Oct 2026, 14:39 UTC

1. Revision 1 · created · 26 Oct 2026

   Published from ghsa record GHSA-38rh-4v39-vfxv

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# Patch Next advisory brief: CVE-2026-34737

Advisory: AVideo: Arbitrary Stripe Subscription Cancellation via Debug Endpoint and retrieveSubscriptions() Bug
IDs: CVE-2026-34737, GHSA-38rh-4v39-vfxv
Record: https://patchnext.com/advisories/cve-2026-34737 (revision 1, source checked 26 Oct 2026, 14:39 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: Medium (CVSS 6.5)
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 <= 26.0

## 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-38rh-4v39-vfxv (GitHub-reviewed advisory GHSA-38rh-4v39-vfxv lists affected ranges: Packagist wwbn/avideo >=0 <=26.0)

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