CVE-2026-102149CWE-306

CVE-2026-102149

Critical · published October 1, 2026

CVSS v3.1
9.4
EPSS
0%
Percentile
14.1
In the wild
Unconfirmed
What it is

Kiteworks Email Protection Gateway did not sufficiently restrict which account a certificate could be assigned to. This could allow an attacker to associate a certificate with another user's account, affecting the confidentiality and integrity of that account's encrypted mail and, where certificate-based login is enabled, potentially permitting unauthorized access to the account.

The record
Technical detail
CVSS v3.1
9.4 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L
CVSS v4.0
Not supplied
EPSS
0.00239 · 14.1th percentile
Weakness
CWE-306 · Missing Authentication for Critical Function
Published
2026-10-01T01:17Z
Affected products (1)
ProductVersionsFixed in
accellion/kiteworks< 9.5.19.5.1
References (2)
https://github.com/kiteworks/security-advisories/security/advisories/GHSA-c9w5-4frw-7wqq · 9119a7d8-5eab-497f-8521-727c672e3725https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/VA/white/2026/va-26-274-01.json · 9119a7d8-5eab-497f-8521-727c672e3725
EPSS history
Timeline
  • 02 OCT 03:41Z
    EPSS moved — → 0%
    epss
  • 30 SEP 20:09Z
    Kiteworks Email Protection Gateway Improper Access Control
    cvelistv5