Medium severity · published Sep 30, 2026
CVE-2026-102140
Kiteworks Core Insufficient Verification of Data Authenticity
4.9
CVSS
0.1%
EPSS
No
On KEV
Description
An authenticated administrator could initiate an administrative import using a file whose contents were not fully verified, because the import validated only the file's header rather than the complete file. This could allow unverified or forged content to be accepted and processed, affecting the integrity of the imported data.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N
Attack vector
Network
Complexity
Low
Privileges
High
User interaction
None
Confidentiality
None
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.1% · higher than 3% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CO
Core · Kiteworks
before 9.5.1 · source: vendor
KI
Kiteworks · Accellion
before 9.5.1 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-102140
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-102140
github.com
https://github.com/kiteworks/security-advisories/security/advisories/GHSA-wfxj-p5jc-jqjw
raw.githubusercontent.com
https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/VA/white/2026/va-26-274-01.json
More from Core
9.8
CVE-2026-102115
Kiteworks Core Authentication Bypass in the Password Reset Workflow
9.3
CVE-2026-102147
Kiteworks Core Administrative Account Takeover through Stored Cross-site Scripting (XSS)
8.8
CVE-2026-102120
Kiteworks Core OS Command Injection
8.8
CVE-2026-102125
Kiteworks Core Sandbox Escape
8.7
CVE-2026-102100
Kiteworks Core stored XSS