What is CVE-2026-22701?

CVE-2026-22701 is a security advisory published by Microsoft Security Response Center (MSRC) with Medium severity. filelock Time-of-Check-Time-of-Use (TOCTOU) Symlink Vulnerability in SoftFileLock

Which CVE IDs does CVE-2026-22701 cover?

CVE-2026-22701 covers the following CVE IDs: CVE-2026-22701. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of CVE-2026-22701?

CVE-2026-22701 has a CVSS v3 base score of 5.3, published by Microsoft Security Response Center (MSRC).

Which products are affected by CVE-2026-22701?

CVE-2026-22701 affects 3 products, including: azl3 python-filelock 3.20.1-1 on Azure Linux 3.0; cbl2 python-filelock 3.0.12-13 on CBL Mariner 2.0; cbl2 python-filelock 3.0.12-13 on CBL-Mariner 2.0.

CVE-2026-22701MediumCVSS 5.3

filelock Time-of-Check-Time-of-Use (TOCTOU) Symlink Vulnerability in SoftFileLock

Vendor

Microsoft Security Response Center (MSRC)

Published

June 2, 2026

Last Modified

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🔗 CVE IDs covered (1)

CVE-2026-22701 →

🎯 Affected products3

azl3 python-filelock 3.20.1-1 on Azure Linux 3.0
cbl2 python-filelock 3.0.12-13 on CBL Mariner 2.0
cbl2 python-filelock 3.0.12-13 on CBL-Mariner 2.0

✅ Remediation

KBCBL-Mariner Releases (Security Update) — fixed build 3.0.12-14 KBRelease Notes (Security Update) — fixed build 3.0.12-14 KBCBL-Mariner Releases (Security Update) — fixed build 3.20.3-1

🔗 References (2)

advisoryhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-22701
referencehttps://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade