CVE-2026-121574: Passster (WordPress plugin) · Missing Authorization
Affects Passster (WordPress plugin)Source CVE Database V5
Not known to be exploited · CVSS 5.3 Medium : upgrade to 4.3.21 when convenient.
Data as of 11 Nov 2026, 12:07 UTC
Thin evidence
One scorer or none| CNA (Patchstack) | CVSS 3.1 | 5.3 |
|---|
- Patch
- Available – fixed in 4.3.21
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:NExploitation evidence
Disclosed: evidence found.
CVE published 11 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 11 Nov 2026.
What to do
Upgrade Passster (WordPress plugin) to 4.3.21.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Passstercontent-protector | Affected
| Fixed in
|
AI-suggested
Upgrade the WP Chill Passster plugin to version 4.3.21 or later, where this missing authorization vulnerability has been fixed. No other mitigation actions are indicated by the vendor.
Description
CVE-2026-121574 is a missing authorization vulnerability in the WP Chill Passster plugin, affecting versions before 4.3.21. The flaw allows bypassing access control security levels due to incorrect configuration, potentially exposing protected content. The vulnerability has a medium severity with a CVSS score of 5.3 and was fixed in version 4.3.21.