Kiteworks Core Stored Cross-site Scripting (XSS)

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-102126
StatePUBLISHED
Assignercisa-cg
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-30 21:17:00 UTC
Updated2026-10-01 14:17:16 UTC
DescriptionA 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.

Risk And Classification

Primary CVSS: v3.1 8.1 HIGH from 9119a7d8-5eab-497f-8521-727c672e3725

CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:N

EPSS: 0.002150000 probability, percentile 0.108610000 (date 2026-10-03)

Problem Types: CWE-79 | CWE-79 CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

VersionSourceTypeScoreSeverityVector
3.19119a7d8-5eab-497f-8521-727c672e3725Secondary8.1HIGHCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:N
3.1CNADECLARED8.1HIGHCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
High
User Interaction
Required
Scope
Changed
Confidentiality
High
Integrity
High
Availability
None

CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:N

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Kiteworks Core affected 9.5.1 custom Not specified
CNA Kiteworks Core unaffected 9.5.1 Not specified

References

ReferenceSourceLinkTags
raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/VA/white/2026/va-26-274-01.json 9119a7d8-5eab-497f-8521-727c672e3725 raw.githubusercontent.com
github.com/kiteworks/security-advisories/security/advisories/GHSA-ccfx-6... 9119a7d8-5eab-497f-8521-727c672e3725 github.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: Icare, https://yeswehack.com/hunters/icare (en)

CNA: Supr4s, https://yeswehack.com/hunters/Supr4s (en)

CNA: wlayzz, https://yeswehack.com/hunters/wlayzz (en)

CNA: truff, https://yeswehack.com/hunters/truff (en)

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