CVE-2026-109558

EdgeEver 1.6.0 through 1.112.0 Stored XSS via TemplatesPane Template Preview

8.5 High

EdgeEver 1.6.0 through 1.112.0 contains a stored cross-site scripting vulnerability in TemplatesPane.tsx that renders template contentMarkdown with raw HTML via dangerouslySetInnerHTML without sanitization. Attackers can write templates containing HTML event handlers through an API or MCP token to run script on preview and access the privileged window.edgeeverDesktop bridge.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: Low
User interaction: Passive

What an attacker can affect

Confidentiality: High
Integrity: High
Availability: None

Exploit likelihood

0.42%Up 0.1 points since Oct 13, 2026

What each source reports

CVE List Score used 8.5

EdgeEver 1.6.0 through 1.112.0 Stored XSS via TemplatesPane Template Preview

Record: CVE-2026-109558
CVSS 4.0: 8.5 HighCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
CVSS 3.1: 8.7 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N
Weakness: CWE-79
Updated: 2026-11-02

EUVDEUVD-2026-97881 8.5

Record: EUVD-2026-97881
CVSS 4.0: 8.5 HighCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
Updated: 2026-11-02

GitHub AdvisoriesGHSA-f2xf-xr5r-qf3x 8.5

EdgeEver 1.6.0 through 1.112.0 contains a stored cross-site scripting vulnerability in...

Record: GHSA-f2xf-xr5r-qf3x
CVSS 4.0: 8.5 HighCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS 3.1: 8.7 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N
Weakness: CWE-79
Updated: 2026-11-02

NVD 8.5

Record: CVE-2026-109558
CVSS 4.0: 8.5 HighCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS 3.1: 8.7 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N
Weakness: CWE-79
Updated: 2026-11-02

OSV 8.5

EdgeEver 1.6.0 through 1.112.0 Stored XSS via TemplatesPane Template Preview

Record: CVE-2026-109558
CVSS 4.0: 8.5 HighCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
Weakness: CWE-79
Updated: 2026-11-02

Affected products

tianma-if edgeever

History

History
Recorded	Changed	Sources
Nov 2, 2026	first indexed	CVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2026-109558 is a high vulnerability (CVSS 8.5) in Tianma-if Edgeever, published October 12, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.42%, the 36th percentile. No source names a fixed version.