---
title: "CVE-2026-106155: In Progress Telerik Report Server - Stored XSS & Privilege Escalation"
description: "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."
url: https://panop.io/threat-heartbeat/CVE-2026-106155/
---

# 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 ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-106155)

## 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](https://cwe.mitre.org/data/definitions/79.html)

## 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

- [https://nvd.nist.gov/vuln/detail/CVE-2026-106155](https://nvd.nist.gov/vuln/detail/CVE-2026-106155)
- [https://www.telerik.com/report-server/documentation/knowledge-base/kb-security-improper-neutralization-of-input-cve-2026-106155](https://www.telerik.com/report-server/documentation/knowledge-base/kb-security-improper-neutralization-of-input-cve-2026-106155)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

Panop answers these inside your environment, for this CVE and every other finding.

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