Is there a public exploit for CVE-2026-121636?

No public exploit for CVE-2026-121636 was found in Exploit-DB, Metasploit, Nuclei templates or public proof-of-concept repositories. That is an absence of evidence rather than proof that none exists.

How severe is CVE-2026-121636?

CVE-2026-121636 scores CVSS 5.3 (v3.1), rated medium.

What does CVE-2026-121636 affect?

CVE-2026-121636 affects Unknown Quick Event Manager.

5.3 Medium

The Quick Event Manager WordPress plugin before 9.19 does not verify the authenticity of PayPal payment notifications before marking event…

CVE-2026-121636

The Quick Event Manager WordPress plugin before 9.19 does not verify the authenticity of PayPal payment notifications before marking event registrations as paid, which could allow unauthenticated attackers to mark registrations as paid without making a payment.

Assessment

CVSS: 5.3 (v3.1)
Severity: Medium
Known exploited: Not listed in CISA KEV
Exploit availability: Nothing found in Exploit-DB, Metasploit, Nuclei or public PoC repositories
Published: 6 November 2026
Last updated: 6 November 2026
Affected: Unknown · Quick Event Manager
Assigner: WPScan

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

At the source

EUVD (ENISA)

References

https://wpscan.com/vulnerability/04b181e1-639c-476f-b66b-2a073bf36829/

Community proofs of concept

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