---
title: "CVE-2026-109558: EdgeEver - Stored XSS"
description: "EdgeEver 1.6.0 through 1.112.0 contains a stored XSS caused by rendering template contentMarkdown with raw HTML via dangerouslySetInnerHTML without sanitization in TemplatesPane.tsx, letting attackers run scripts and access privileged bridge, exploit requires API or MCP token access."
url: https://panop.io/threat-heartbeat/CVE-2026-109558/
---

# CVE-2026-109558 EdgeEver - Stored XSS

EdgeEver 1.6.0 through 1.112.0 contains a stored XSS caused by rendering template contentMarkdown with raw HTML via dangerouslySetInnerHTML without sanitization in TemplatesPane.tsx, letting attackers run scripts and access privileged bridge, exploit requires API or MCP token access.

CVSS base score 8.7 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Required

EPSS

0.33% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-109558)

## Details

Type

Stored XSS

Impact

Stored XSS

CVSS vector

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

Published

12 October 2026

Updated

15 October 2026

Weakness

[CWE-79](https://cwe.mitre.org/data/definitions/79.html)

## Vendor fix

Update to the latest version with proper HTML sanitization in TemplatesPane.tsx.

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-2026-109558](https://nvd.nist.gov/vuln/detail/CVE-2026-109558)
- [https://github.com/tianma-if/edgeever](https://github.com/tianma-if/edgeever)
- [https://github.com/tianma-if/edgeever/blob/f6ade70423ba366077653dbb8ac43a677933c776/apps/web/src/components/TemplatesPane.tsx#L150-L158](https://github.com/tianma-if/edgeever/blob/f6ade70423ba366077653dbb8ac43a677933c776/apps/web/src/components/TemplatesPane.tsx#L150-L158)
- [https://github.com/tianma-if/edgeever/commit/6b5027e8b4becbee0c0de7cd1a3d04af78ca87ca](https://github.com/tianma-if/edgeever/commit/6b5027e8b4becbee0c0de7cd1a3d04af78ca87ca)
- [https://github.com/tianma-if/edgeever/issues/533](https://github.com/tianma-if/edgeever/issues/533)
- [https://github.com/tianma-if/edgeever/issues/546](https://github.com/tianma-if/edgeever/issues/546)
- [https://www.vulncheck.com/advisories/edgeever-1.6.0-through-1.112.0-stored-xss-via-templatespane-template-preview](https://www.vulncheck.com/advisories/edgeever-1.6.0-through-1.112.0-stored-xss-via-templatespane-template-preview)

[← All CVEs](https://panop.io/threat-heartbeat/)

## 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

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