What is GHSA-pfc9-39px-jq86?

GHSA-pfc9-39px-jq86 is a security advisory published by GitHub Security Advisories with High severity. Access of resource using incompatible type ('type confusion') in Microsoft Edge (Chromium-based)...

Which CVE IDs does GHSA-pfc9-39px-jq86 cover?

GHSA-pfc9-39px-jq86 covers the following CVE IDs: CVE-2026-66321. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-pfc9-39px-jq86?

GHSA-pfc9-39px-jq86 has a CVSS v3 base score of 7.4, published by GitHub Security Advisories.

GHSA-pfc9-39px-jq86HighCVSS 7.4

Access of resource using incompatible type ('type confusion') in Microsoft Edge (Chromium-based)...

Vendor

GitHub Security Advisories

Published

August 4, 2026

Last Modified

August 4, 2026

🔗 CVE IDs covered (1)

CVE-2026-66321 →

📋 Description

Access of resource using incompatible type ('type confusion') in Microsoft Edge (Chromium-based) allows an unauthorized attacker to execute code over a network.

🔗 References (3)

https://nvd.nist.gov/vuln/detail/CVE-2026-66321
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-66321
https://github.com/advisories/GHSA-pfc9-39px-jq86