Libxml2: unbounded relaxng include recursion leading to stack overflow

Mariner

Read the vendor bulletin Get alerts for cbl2 libxml2 2.10.4-9 on CBL Mariner

3.7CVSS out of 10Low severity

Scope

What the vendor says is affected

cbl2 libxml2 2.10.4-9 on CBL Mariner 2.0
azl3 libxml2 2.11.5-8 on Azure Linux 3.0
cbl2 libxml2 2.10.4-10 on CBL Mariner 2.0
azl3 libxml2 2.11.5-9 on Azure Linux 3.0
cbl2 libxml2 2.10.4-11
azl3 libxml2 2.11.5-7 on Azure Linux 3.0
cbl2 libxml2 2.10.4-11 on CBL Mariner 2.0
azl3 libxml2 2.11.5-10 on Azure Linux 3.0
cbl2 libxml2 2.10.4-11 on CBL-Mariner 2.0

Versions the vendor lists as fixed

2.11.5-10

Next step

What the vendor recommends

CBL-Mariner Releases Release Notes

Review the complete instructions on the vendor's site

Timeline

When this advisory changed

Jan 19, 2026 at 1:01 AM UTC
Published by Microsoft Security Response Center
The publication date reported by the vendor.
Sep 25, 2026 at 1:52 AM UTC
Updated by Microsoft Security Response Center
The vendor changed the advisory after it was first published.
Sep 29, 2026 at 11:40 AM UTC
Added to SecurityAlert
We collected the advisory from the official source.

Vulnerabilities

CVEs named in this advisory

CVE-2026-0989View CVSS, KEV, EPSS, and threat context

Source

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Vendor: Microsoft Security Response Center
Advisory ID: CVE-2026-0989
Last source check: Sep 29, 2026 at 11:40 AM UTC

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Your environment

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Read the vendor's prerequisites and exceptions.
Test the update or mitigation through your normal change process.

Watch cbl2 libxml2 2.10.4-9 on CBL Mariner

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What the vendor says is affected

Versions the vendor lists as fixed

What the vendor recommends

When this advisory changed

CVEs named in this advisory

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