CVE-2026-102126

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.

CVSS v3 8.1 HIGH

8.1^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.7 / Impact : 5.8

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required HIGH

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact NONE

Scope CHANGED

References

Link	Resource
https://github.com/kiteworks/security-advisories/security/advisories/GHSA-ccfx-6hq4-fx4g	Vendor Advisory
https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/VA/white/2026/va-26-274-01.json	Broken Link

Configurations

Configuration 1 (hide)

cpe:2.3:a:accellion:kiteworks:*:*:*:*:*:*:*:*

History

07 Oct 2026, 14:10

Type	Values Removed	Values Added
References	~~() https://github.com/kiteworks/security-advisories/security/advisories/GHSA-ccfx-6hq4-fx4g -~~	() https://github.com/kiteworks/security-advisories/security/advisories/GHSA-ccfx-6hq4-fx4g - Vendor Advisory
References	~~() https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/VA/white/2026/va-26-274-01.json -~~	() https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/VA/white/2026/va-26-274-01.json - Broken Link
First Time		Accellion Accellion kiteworks
CPE		cpe:2.3:a:accellion:kiteworks::::::::

30 Sep 2026, 21:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-09-30 21:17

Updated : 2026-10-07 14:10

NVD link : CVE-2026-102126

Mitre link : CVE-2026-102126

CVE.ORG link : CVE-2026-102126

JSON object : View

Products Affected

accellion

kiteworks

CWE

CWE-79

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

{"id": "CVE-2026-102126", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-102126", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "version": "2.0.3", "timestamp": "2026-10-01T13:24:15.630566Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "9119a7d8-5eab-497f-8521-727c672e3725", "cvssData": {"scope": "CHANGED", "version": "3.1", "baseScore": 8.1, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:N", "integrityImpact": "HIGH", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "HIGH", "confidentialityImpact": "HIGH"}, "impactScore": 5.8, "exploitabilityScore": 1.7}]}, "affected": [{"source": "9119a7d8-5eab-497f-8521-727c672e3725", "affectedData": [{"vendor": "Kiteworks", "product": "Core", "versions": [{"status": "affected", "version": "0", "lessThan": "9.5.1", "versionType": "custom"}, {"status": "unaffected", "version": "9.5.1"}], "defaultStatus": "unknown"}]}], "published": "2026-09-30T21:17:00.963", "references": [{"url": "https://github.com/kiteworks/security-advisories/security/advisories/GHSA-ccfx-6hq4-fx4g", "tags": ["Vendor Advisory"], "source": "9119a7d8-5eab-497f-8521-727c672e3725"}, {"url": "https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/VA/white/2026/va-26-274-01.json", "tags": ["Broken Link"], "source": "9119a7d8-5eab-497f-8521-727c672e3725"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "9119a7d8-5eab-497f-8521-727c672e3725", "description": [{"lang": "en", "value": "CWE-79"}]}], "descriptions": [{"lang": "en", "value": "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."}], "lastModified": "2026-10-07T14:10:17.597", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:accellion:kiteworks:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "E3DAD823-F1FD-402B-86A5-C69DD8261D4B", "versionEndExcluding": "9.5.1"}], "operator": "OR"}]}], "sourceIdentifier": "9119a7d8-5eab-497f-8521-727c672e3725"}