MEDIUM 6.5 Microsoft
CVE-2023-39615
Xmlsoft Libxml2 v2.11.0 was discovered to contain an out-of-bounds read via the xmlSAX2StartElement() function at /libxml2/SAX2.c. This vulnerability allows attackers to cause a Denial of Service (DoS) via supplying a crafted XML file. NOTE: the vendor's position is that the product does not support the legacy SAX1 interface with custom callbacks; there is a crash even without crafted input.
Microsoft Security Update 2026-Aug: Xmlsoft Libxml2 v2.11.0 was discovered to contain an out-of-bounds read via the xmlSAX2StartElement() function at /libxml2/SAX2.c. This vulnerability allows attackers to cause a Denial of Service (DoS) via supplying a crafted XML file. NOTE: the vendor's position is that the product does not support the legacy SAX1 interface with custom callbacks; there is a crash even without crafted input.
Affected Products
- azl3 libxml2 2.11.5-5 on Azure Linux 3.0
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-39615
- https://nvd.nist.gov/vuln/detail/CVE-2023-39615
This medium severity vulnerability with a CVSS score of 6.5 was published on 2026-08-06 via Microsoft. Affected: azl3 libxml2 2.11.5-5 on Azure Linux 3.0.
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