CVE-2026-87939CWE-79cross-site-scripting

CVE-2026-87939

Medium · published October 22, 2026

CVSS v3.1
4.2
EPSS
0%
Percentile
4.9
In the wild
Unconfirmed
What it is

Improper Neutralization of Input During Web Page Generation ("Cross-site Scripting") vulnerability in Drupal Feed Block allows Stored XSS. This issue affects Feed Block versions: from 0.0.0 to 2.0.2, from 3.0.0 to 3.0.2.

The record
Technical detail
CVSS v3.1
4.2 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00161 · 4.9th percentile
Weakness
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Published
2026-10-22T06:17Z
References (1)
https://www.drupal.org/sa-contrib-2026-137 · [email protected]
EPSS history
Timeline
  • 23 OCT 04:09Z
    EPSS moved — → 0%
    epss
  • 22 OCT 01:22Z
    Feed Block - Moderately critical - Cross-site scripting - SA-CONTRIB-2026-137
    cvelistv5
  • 22 OCT 01:22Z
    Feed Block - Moderately critical - Cross-site scripting - SA-CONTRIB-2026-137
    cvelistv5