What is GHSA-q352-99mq-9jqq?

GHSA-q352-99mq-9jqq is a security advisory published by GitHub Security Advisories with High severity. Improper verification of cryptographic signature in Microsoft Exchange Server allows an...

Which CVE IDs does GHSA-q352-99mq-9jqq cover?

GHSA-q352-99mq-9jqq covers the following CVE IDs: CVE-2026-87696. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-q352-99mq-9jqq?

GHSA-q352-99mq-9jqq has a CVSS v3 base score of 7.5, published by GitHub Security Advisories.

GHSA-q352-99mq-9jqqHighCVSS 7.5

Improper verification of cryptographic signature in Microsoft Exchange Server allows an...

Vendor

GitHub Security Advisories

Published

October 13, 2026

Last Modified

October 13, 2026

🔗 CVE IDs covered (1)

CVE-2026-87696 →

📋 Description

Improper verification of cryptographic signature in Microsoft Exchange Server allows an authorized attacker to elevate privileges over a network.

🔗 References (3)

https://nvd.nist.gov/vuln/detail/CVE-2026-87696
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-87696
https://github.com/advisories/GHSA-q352-99mq-9jqq