What is CVE-2026-21227?

CVE-2026-21227 is a high-severity vulnerability in Microsoft Azure Logic Apps, classified under Path Traversal. CVSS score: 8.2/10. Published 2026-01-22.

How severe is CVE-2026-21227?

High severity. CVSS v3 base score is 8.2 out of 10.

Path Traversal in Microsoft Azure Logic Apps

CVE-2026-21227

Improper limitation of a pathname to a restricted directory ('path traversal') in Azure Logic Apps allows an unauthorized attacker to elevate privileges over a network.

Vulnerability class: Path Traversal (Directory Traversal)

EPSS: 0.002 (41.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N/E:U/RL:O/RC:C.

Affected products

Microsoft Azure Logic Apps

Weakness classification (CWE)

CWE-22 — Path Traversal

References

Azure Logic Apps Elevation of Privilege Vulnerability (vendor-advisory, patch)

Frequently asked questions

What is CVE-2026-21227?: CVE-2026-21227 is a high-severity vulnerability in Microsoft Azure Logic Apps, classified under Path Traversal. CVSS score: 8.2/10. Published 2026-01-22.
How severe is CVE-2026-21227?: High severity. CVSS v3 base score is 8.2 out of 10.