WordPress plugin
Subscribe to Comments 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
- High1
- Medium6
- Low0
All Subscribe to Comments vulnerabilities
| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| Medium4.3 | 2.3.2 - Authenticated (Author+) Arbitrary Email Header Injection 2.3 – 2.3.2Update to 2.3.3 | CVE-2026-91831 | |
| Medium5.3 | Unauthenticated Information Exposure ≤2.3.2Update to 2.3.3 | CVE-2026-91830 | |
| Medium6.1 | Reflected Cross-Site Scripting ≤2.3.2Update to 2.3.3 | CVE-2026-91829 | |
| Medium5.4 | Authenticated (Author+) Stored Cross-Site Scripting ≤2.3.1No patch available | CVE-2026-66706 | |
| Medium6.1 | Reflected Cross-Site Scripting ≤2.3Update to 2.3.1 | CVE-2024-8792 | |
| High7.2 | Local File Includion ≤2.1.2Update to 2.3 | CVE-2015-10133 | |
| Medium6.1 | Reflected Cross-Site Scripting ≤2.0.7Update to 2.0.8 | CVE-2006-10001 |
- Medium4.32.3.2 - Authenticated (Author+) Arbitrary Email Header Injection
2.3 – 2.3.2Update to 2.3.3
- Medium5.3Unauthenticated Information Exposure
≤2.3.2Update to 2.3.3
- Medium6.1Reflected Cross-Site Scripting
≤2.3.2Update to 2.3.3
- Medium5.4Authenticated (Author+) Stored Cross-Site Scripting
≤2.3.1No patch available
- Medium6.1Reflected Cross-Site Scripting
≤2.3Update to 2.3.1
- High7.2Local File Includion
≤2.1.2Update to 2.3
- Medium6.1Reflected Cross-Site Scripting
≤2.0.7Update to 2.0.8
Subscribe to Comments: common questions
Does Subscribe to Comments have known vulnerabilities?
Yes. VulnCrest Radar lists 7 known vulnerabilities in Subscribe to Comments: 1 high, 6 medium. At least one is not fixed in the latest version.
How do I check which version of Subscribe to Comments 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 Subscribe to Comments vulnerability?
CVE-2026-91831, published Oct 20, 2026: Subscribe to Comments 2.3 - 2.3.2 - Authenticated (Author+) Arbitrary Email Header Injection. Severity: Medium (CVSS 4.3).
Is any Subscribe to Comments vulnerability listed in CISA KEV?
No. None of the known Subscribe to Comments vulnerabilities is currently listed in the CISA KEV catalog.