CVE-2026-121636: Quick Event Manager (WordPress plugin) · Insufficient Verification of Data Authenticity
Affects Quick Event Manager (WordPress plugin)Source CVE Database V5
Not known to be exploited · CVSS 5.3 Medium : upgrade to 9.19 when convenient.
Data as of 6 Nov 2026, 07:51 UTC
Thin evidence
One scorer or none| CNA (WPScan) | CVSS 3.1 | 5.3 |
|---|
- Patch
- Available – fixed in 9.19
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:NExploitation evidence
Disclosed: evidence found.
CVE published 6 Nov 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 5 Nov 2026.
What to do
Upgrade Quick Event Manager (WordPress plugin) to 9.19.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Quick Event Manager | Affected
| Fixed in
|
AI-suggested
Upgrade the Quick Event Manager plugin to version 9.19 or later, where the vulnerability is fixed. No other mitigation or temporary workaround is indicated.
Description
The Quick Event Manager WordPress plugin versions from 9.9.5 up to but not including 9.19 contain a vulnerability where PayPal payment notifications are not properly verified for authenticity. This flaw allows unauthenticated attackers to mark event registrations as paid without actually making a payment. The issue is fixed in version 9.19.