High severity · published Aug 5, 2026
CVE-2026-16602
Content Protector (Passster) < 4.3.6 - Unauthenticated Non-Public Post Content Disclosure via Captcha REST Endpoint
7.5
CVSS
0.4%
EPSS
No
On KEV
Description
The Passster WordPress plugin before 4.3.6 does not perform a post-status check before returning post content from an unauthenticated REST endpoint, allowing unauthenticated users to disclose the content of non-public (draft, private, and pending) posts on sites that have a captcha provider configured.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 38% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
PA
Passster ·
before 4.3.6 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-16602
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-16602
wpscan.com
https://wpscan.com/vulnerability/fcca0d1c-1a5b-4515-8182-d68f0759b978/
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