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
libxml2 26.04 LTS resolute
Fixed 2.15.2+dfsg-0.1ubuntu0.3
24.04 LTS noble
Fixed 2.9.14+dfsg-1.3ubuntu3.10
22.04 LTS jammy
Fixed 2.9.13+dfsg-1ubuntu0.14
20.04 LTS focal
Fixed 2.9.10+dfsg-5ubuntu0.20.04.10+esm6
18.04 LTS bionic
Fixed 2.9.4+dfsg1-6.1ubuntu1.9+esm9
16.04 LTS xenial
Fixed 2.9.3+dfsg1-1ubuntu0.7+esm14
14.04 LTS trusty
Fixed 2.9.1+dfsg1-3ubuntu4.13+esm13

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Patch details

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

Package Patch details
libxml2

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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