CVE-2026-91829CWE-79cross-site-scripting

CVE-2026-91829

High · published October 11, 2026

CVSS v3.1
7.1
EPSS
0%
Percentile
5.3
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
7.1 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L
CVSS v4.0
Not supplied
EPSS
0.00164 · 5.3th percentile
Weakness
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Published
2026-10-11T11:17Z
References (1)
https://wpscan.com/vulnerability/1ed0314d-9871-4914-bb9c-ff894ea4c400/ · [email protected]
EPSS history
Timeline
  • 12 OCT 03:31Z
    EPSS moved — → 0%
    epss
  • 11 OCT 06:00Z
    Subscribe to Comments < 2.3.3 - Reflected XSS via 'ref' Parameter
    cvelistv5
  • 11 OCT 06:00Z
    Subscribe to Comments < 2.3.3 - Reflected XSS via 'ref' Parameter
    cvelistv5