undici vulnerable to cross-user cache disclosure via same-origin redirect
CVE-2026-120474
Summary
Is Azure Linux the only Microsoft product that includes this open-source library and is therefore potentially affected by this vulnerability?
One of the main benefits to our customers who choose to use the Azure Linux distro is the commitment to keep it up to date with the most recent and most secure versions of the open source libraries with which the distro is composed. Microsoft is committed to transparency in this work which is why we began publishing CSAF/VEX in October 2025. See this blog post for more information.
If impact to additional products is identified, we will update the CVE to reflect this.
Products covered
cbl2 lz4 1.9.4-1 on CBL Mariner 2.0
cbl2 mysql 8.0.44-2 on CBL Mariner 2.0
azl3 lz4 1.9.4-2 on Azure Linux 3.0
azl3 mysql 8.0.44-2 on Azure Linux 3.0
azl3 rust 1.75.0-22 on Azure Linux 3.0
azl3 lz4 1.9.4-1 on Azure Linux 3.0
azl3 mysql 8.0.43-1 on Azure Linux 3.0
cbl2 mysql 8.0.43-1 on CBL Mariner 2.0
Show 2 more products
cbl2 lz4 1.9.4-2 on CBL Mariner 2.0
azl3 rust 1.90.0-1 on Azure Linux 3.0
Remediation
CBL-Mariner Releases
Vendor-listed fixes
1.9.4-2
8.0.44-2
CVEs in this advisory 1
Updates
- Published by Microsoft Security Response Center
The publication date reported by the vendor.
- Updated by Microsoft Security Response Center
The vendor changed the advisory after it was first published.
- Added to SecurityAlert
We collected the advisory from the official source.
- Confirmed at the source
Our collector saw this advisory during a later source check.