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Ubuntu Security NoticesUSN-8787-1

USN-8787-1: libxml2 vulnerabilities

It was discovered that libxml2 incorrectly handled certain XML elements under certain circumstances. An attacker could possibly use this issue to cause libxml2 to crash or execute arbitrary code. (CVE-2026-86140) It was discovered that libxml2 incorrectly handled certain XML documents when used with Python bindings. A remote attacker could possibly use this issue to cause applications using libxml2 to crash, resulting in a denial of service. (CVE-2026-74860)

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Scope

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Timeline

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  1. Published by Ubuntu

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  2. Added to SecurityAlert

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  3. Confirmed at the source

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Vulnerabilities

CVEs named in this advisory

CVE-2026-86140View CVSS, KEV, EPSS, and threat contextCVE-2026-74860View CVSS, KEV, EPSS, and threat context
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