What is CVE-2026-45501?

CVE-2026-45501 is a medium-severity vulnerability, classified under Server-Side Request Forgery (SSRF). CVSS score: 6.5/10. Published 2026-06-09.

How severe is CVE-2026-45501?

Medium severity. CVSS v3 base score is 6.5 out of 10.

CVE-2026-45501

CVE-2026-45501

Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Exchange Server allows an unauthorized attacker to perform spoofing over a network.

Vulnerability class: SSRF (Server-Side Request Forgery)

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.

Weakness classification (CWE)

CWE-918 — Server-Side Request Forgery (SSRF)

References

secure@microsoft.com

Frequently asked questions

What is CVE-2026-45501?: CVE-2026-45501 is a medium-severity vulnerability, classified under Server-Side Request Forgery (SSRF). CVSS score: 6.5/10. Published 2026-06-09.
How severe is CVE-2026-45501?: Medium severity. CVSS v3 base score is 6.5 out of 10.