CVE-2026-106155 In Progress Telerik Report Server - Stored XSS & Privilege Escalation

In Progress Telerik Report Server < 12.2.26.1007 contains a stored XSS caused by embedding javascript: or vbscript: URLs in report navigation or HTML text box links, letting authenticated report authors execute scripts in other users' sessions, exploit requires authenticated report author.

CVSS base score 8.9 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Required
EPSS
0.20% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Stored XSS
Impact
Stored XSS, Privilege Escalation
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:L
Published
9 October 2026
Updated
15 October 2026
Weakness
CWE-79

Vendor fix

Update to version 12.2.26.1007 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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