CVE-2026-86144

Publication date 5 September 2026

Last updated 8 October 2026

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

5.6 · Medium

Score breakdown

Description

In xinclude in libxml2 before 2.15.4, xmlXIncludeProcess and xmlXIncludeProcessTree do not propagate parseFlags. This has security relevance for, for example, the XML_PARSE_NONET flag, if (without it) a custom resource loader accesses the internet and triggers XML external entity injection, SSRF, or a denial of service (e.g., for an attacker-controlled internet resource that is intentionally slow).

Status

Package Ubuntu Release Status

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package Patch details

Severity score breakdown

CVSS version: CVSS v3.0

Base score 5.6 · Medium

Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:L

References

Related Ubuntu Security Notices (USN)

    • USN-8910-1
    • libxml2 vulnerabilities
    • 8 October 2026

Other references

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