CVE-2026-1889CWE-79

Outgrow <= 2.1 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'outgrow' Shortcode 'id' Attribute

Medium · published March 21, 2026

CVSS v3.1
6.4
EPSS
0%
Percentile
15.8
In the wild
Unconfirmed
What it is

The Outgrow plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'id' attribute of the 'outgrow' shortcode in all versions up to, and including, 2.1. This is due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

The record
Technical detail
CVSS v3.1
6.4 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00252 · 15.8th percentile
Weakness
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Published
2026-03-21T03:26Z
EPSS history
Timeline
  • 21 MAR 03:26Z
    Outgrow <= 2.1 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'outgrow' Shortcode 'id' Attribute
    cvelistv5