ZDF
Sign inSign up

Vulnerabilities

Vulnerability · CVE-2026-43883

WWBN AVideo is an open source video platform.

Published May 11, 2026 · catalog updated Jun 17, 2026 · WWBN AVideo is an

Check if you run it

No confirmed exploitation is on record for CVE-2026-43883. EPSS is 0.25%. Act only if a listed version of WWBN AVideo is an is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (WWBN AVideo is an).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Medium4.2
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.25%
Remediation
Version ranges on file
Affected products
stated named in the record

WWBN AVideo is an open source video platform. In versions up to and including 29.0, plugin/PayPalYPT/agreementCancel.json.php cancels a PayPal billing agreement using an attacker-supplied agreement parameter without verifying that the authenticated user owns the agreement. A low-privilege authenticated user who learns or obtains another user's PayPal billing agreement ID can silently suspend the victim's recurring subscription, causing revenue loss to the platform and loss of paid service to the victim. Commit 0da3dcff1eda2f497694bf82b559829471c292c2 contains an updated fix.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • stated named in the record<= 29.0

How to fix CVE-2026-43883

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-43883. EPSS is 0.25%. Act only if a listed version of WWBN AVideo is an is installed.

Which versions are affected?

Compare what you have installed with named in the record <= 29.0. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-639: Authorization Bypass Through User-Controlled Key. EPSS 0.25%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. May 11, 2026 · NIST NVD

    Detected

    WWBN AVideo is an open source video platform. In versions up to and including 29.0, plugin/PayPalYPT/agreementCancel.json.php cancels a PayPal billing agreement using an attacker-supplied agreement parameter without verifying that the authenticated user owns the agreement. A low-privilege authenticated user who learns or obtains another user's PayPal billing agreement ID can silently suspend the v

  2. Jun 17, 2026 · NIST NVD

    Updated

    WWBN AVideo is an open source video platform. In versions up to and including 29.0, plugin/PayPalYPT/agreementCancel.json.php cancels a PayPal billing agreement using an attacker-supplied agreement parameter without verifying that the authenticated user owns the agreement. A low-privilege authenticated user who learns or obtains another user's PayPal billing agreement ID can silently suspend the v

Sources

  • CVE.orgVulnerability recordCVE-2026-43883

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-43883

    30-day exploitation probability 0.3%

    first.org
  • NIST NVDVulnerability recordCVE-2026-43883

    WWBN AVideo is an open source video platform. In versions up to and including 29.0, plugin/PayPalYPT/agreementCancel.json.php cancels a PayPal billing agreement using an attacker-supplied agreement parameter without verifying that the authenticated user owns the agreement. A low-

    nvd.nist.gov

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.