WordPress plugin
CoSign Single Signon security & vulnerabilities
Unpatched vulnerability in the latest version
At least one vulnerability affects the latest version and no fix has been released. Deactivate the plugin or restrict access to the affected feature until the vendor ships a patch.
- Critical0
- High0
- Medium1
- Low0
All CoSign Single Signon vulnerabilities
| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| Medium6.1 | Reflected Cross-Site Scripting via $_SERVER['PHP_SELF'] ≤0.3.1No patch available | CVE-2025-13512 |
- Medium6.1Reflected Cross-Site Scripting via $_SERVER['PHP_SELF']
≤0.3.1No patch available
CoSign Single Signon: common questions
Does CoSign Single Signon have known vulnerabilities?
Yes. VulnCrest Radar lists 1 known vulnerability in CoSign Single Signon: 1 medium. At least one is not fixed in the latest version.
How do I check which version of CoSign Single Signon I run?
In wp-admin open Plugins → Installed Plugins; the version is shown under the name. Without admin access, our passive Check my site tool can often read it from public files.
What is the most recent CoSign Single Signon vulnerability?
CVE-2025-13512, published Dec 4, 2025: CoSign Single Signon <= 0.3.1 - Reflected Cross-Site Scripting via $_SERVER['PHP_SELF']. Severity: Medium (CVSS 6.1).
Is any CoSign Single Signon vulnerability listed in CISA KEV?
No. None of the known CoSign Single Signon vulnerabilities is currently listed in the CISA KEV catalog.