CVE-2026-106155

Stored Cross-site Scripting (XSS) in Telerik Report Server Web Report Viewers

Published Oct 9, 2026 CVSS 3.1 · 8.9 High EPSS < 1% KEV · Not listed
Description
In Progress® Telerik® Report Server prior to version 12.2.26.1007, a stored cross-site scripting vulnerability in the shared reporting engine allows an authenticated report author to embed javascript: or vbscript: URLs in report navigation actions or HTML text box links. When another user views the malicious report and the embedded navigation is triggered, attacker-controlled script can execute in the web report viewer's origin. In a multi-user Report Server deployment, this can enable privilege escalation by performing actions in a higher-privilege user's authenticated session, including an administrator's session.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Progress Software
Progress Software telerik Report Server
Vendors & Products Progress Software
Progress Software telerik Report Server
Type Values Removed Values Added
Description In Progress® Telerik® Report Server prior to version 12.2.26.1007, a stored cross-site scripting vulnerability in the shared reporting engine allows an authenticated report author to embed javascript: or vbscript: URLs in report navigation actions or HTML text box links. When another user views the malicious report and the embedded navigation is triggered, attacker-controlled script can execute in the web report viewer's origin. In a multi-user Report Server deployment, this can enable privilege escalation by performing actions in a higher-privilege user's authenticated session, including an administrator's session.
Title Stored Cross-site Scripting (XSS) in Telerik Report Server Web Report Viewers
Weaknesses CWE-79
References
Metrics cvssV3_1

{'score': 8.9, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:L'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
ProgressSoftware
Published
Updated
Oct 9, 2026, 6:03 PM
Reserved
Oct 6, 2026, 3:51 PM
Status
Deferred
Published
Oct 9, 2026, 8:16 AM
Modified
Oct 9, 2026, 6:17 PM