CVE-2026-91829
The Subscribe to Comments WordPress plugin before 2.3.3 does not properly validate a parameter before reflecting it into a link target, allowing unauthenticated attackers to perform Reflected Cross-Site Scripting via a crafted URL against anyone who…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.16%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
The Subscribe to Comments WordPress plugin before 2.3.3 does not properly validate a parameter before reflecting it into a link target, allowing unauthenticated attackers to perform Reflected Cross-Site Scripting via a crafted URL against anyone who clicks it, including administrators.
- CVSS 3.1
- 7.1 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L
- EPSS
- 0.16% probability · 5th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-79
- Source
- contact@wpscan.com
EPSS moved from 0.2% on 11 October 2026 to 0.2% on 22 October 2026.
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.