Soupwebsocketextensiondeflate: libsoup: libsoup: websocket permessage-deflate unbounded decompression remote denial of service

Mariner

Read the vendor bulletin Get alerts for azl3 libsoup 3.4.4-16 on Azure Linux

7.5CVSS out of 10High severity

Scope

What the vendor says is affected

azl3 libsoup 3.4.4-16 on Azure Linux 3.0

Timeline

When this advisory changed

Jul 17, 2026 at 1:01 AM UTC
Published by Microsoft Security Response Center
The publication date reported by the vendor.
Sep 3, 2026 at 11:40 PM UTC
Added to SecurityAlert
We collected the advisory from the official source.
Sep 4, 2026 at 5:45 AM UTC
Confirmed at the source
Our collector saw this advisory during a later source check.

Vulnerabilities

CVEs named in this advisory

CVE-2026-15709View CVSS, KEV, EPSS, and threat context

Source

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Vendor: Microsoft Security Response Center
Advisory ID: CVE-2026-15709
Last source check: Sep 13, 2026 at 2:40 AM UTC

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Your environment

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Watch azl3 libsoup 3.4.4-16 on Azure Linux

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What the vendor says is affected

When this advisory changed

CVEs named in this advisory

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