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TI-2026-71288 Aliases CVE-2026-109558GHSA-f2xf-xr5r-qf3x

EdgeEver Stored XSS via TemplatesPane Template Preview

Priority HIGH 72CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
Passive
Attack complexity
Low
Attack requirements
None
Impact type
Cross-site scripting
Confidentiality · integrity · availability
High · High · None
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-79.

Summary

EdgeEver versions 1.6.0 through 1.112.0 contain a stored cross-site scripting flaw in TemplatesPane.tsx, which renders template content as raw HTML without sanitization. An attacker who can create templates through an API or MCP token can embed HTML event handlers that run script when a user previews the template, reaching the privileged window.edgeeverDesktop bridge. The weakness is CWE-79.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Description from the CNA

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00419 36th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
tianma-ifEdgeEver1.6.0 – 1.112.0—No fix listedCNA
  • EdgeEver Vendortianma-if Affected 1.6.0 – 1.112.0 Fixed in — No fix listed CNA

Remediation

The sources list no fixed version for EdgeEver.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Timeline

  1. 2026-10-12 Threatist record created from CVE-2026-109558
  2. 2026-10-13 Alias added: GHSA-f2xf-xr5r-qf3x
  3. 2026-10-13 Priority changed: MEDIUM → LOW
  4. 2026-10-13 CISA SSVC decision points changed
  5. 2026-10-13 Priority changed: LOW → HIGH

References

Patch 1

Other 4

  • TI-2026-71287 Stored cross-site scripting in EdgeEver drag preview CVSS 4.0HIGH 8.4
  • TI-2026-71286 Code execution in EdgeEver Desktop via unchecked ACP IPC handler CVSS 4.0HIGH 7.3
  • TI-2026-70706 Missing authorization in EdgeEver memo template API routes CVSS 4.0MEDIUM 5.3
  • TI-2026-71289 Navigation allowlist bypass in EdgeEver Desktop exposes its bridge CVSS 4.0HIGH 8.4

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences