CVE-2026-102126: Kiteworks Core · Cross-site Scripting
Affects Kiteworks CoreSource CVE Database V5
Not known to be exploited · CVSS 8.1 High : upgrade to 9.5.1 soon.
Data as of 14 Nov 2026, 20:43 UTC
- EPSS
- 0.3% chance of exploitation in 30 days – higher than 26% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 9.5.1
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:NExploitation evidence
Disclosed: evidence found.
CVE published 30 Sep 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 14 Nov 2026.
What to do
Upgrade Core and kiteworks/core to 9.5.1.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| KiteworksCore | Affected
| Fixed in
|
GitHubkiteworks/corepkg:github/kiteworks/coreOther threats | Affected
| Fixed in
|
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
If you cannot patch yet, restrict delegated administrator permissions and avoid viewing untrusted content in administrative sessions.
Description
CVE-2026-102126 is a stored cross-site scripting (XSS) vulnerability in Kiteworks Core. It allows a lower-privileged administrator with a narrowly scoped delegated permission to store malicious content. This content executes arbitrary JavaScript in the session of a System Administrator who views the affected page, potentially escalating privileges to full administrative control, including creating new admin accounts. The vulnerability affects Kiteworks Core versions from 0 up to but not including 9.5.1. The CVSS score is 8.1, indicating high severity.