CVE-2026-102126CWE-79cross-site-scripting

CVE-2026-102126

High · published October 1, 2026

CVSS v3.1
8.1
EPSS
0%
Percentile
24.9
In the wild
Unconfirmed
What it is

A stored cross-site scripting (XSS) weakness in Kiteworks Core could allow an administrator holding only a single, narrowly scoped delegated permission to store crafted content that later executes arbitrary JavaScript in the authenticated session of a System Administrator who views the affected page. This could have permitted the lower-privileged administrator to escalate to full administrative control of the tenant, including the creation of a new administrative account.

The record
Technical detail
CVSS v3.1
8.1 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:N
CVSS v4.0
Not supplied
EPSS
0.00330 · 24.9th percentile
Weakness
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Published
2026-10-01T01:17Z
Affected products (1)
ProductVersionsFixed in
accellion/kiteworks< 9.5.19.5.1
References (2)
EPSS history
Timeline
  • 02 OCT 03:41Z
    EPSS moved — → 0%
    epss
  • 30 SEP 20:15Z
    Kiteworks Core Stored Cross-site Scripting (XSS)
    cvelistv5