CVE-2025-8732

Publication date 8 August 2025

Last updated 22 January 2026

Ubuntu priority

Low

Why this priority?

Cvss 3 Severity Score

3.3 · Low

Score breakdown

Description

A vulnerability was found in libxml2 up to 2.14.5. It has been declared as problematic. This vulnerability affects the function xmlParseSGMLCatalog of the component xmlcatalog. The manipulation leads to uncontrolled recursion. Attacking locally is a requirement. The exploit has been disclosed to the public and may be used. The real existence of this vulnerability is still doubted at the moment. The code maintainer explains, that "[t]he issue can only be triggered with untrusted SGML catalogs and it makes absolutely no sense to use untrusted catalogs. I also doubt that anyone is still using SGML catalogs at all."

Read the notes from the security team

Why is this CVE low priority?

Only a recursion issue when parsing untrusted catalogs

Learn more about Ubuntu priority

Status

Package Ubuntu Release Status
libxml2 25.10 questing
Fixed 2.14.5+dfsg-0.2ubuntu0.1
25.04 plucky Ignored end of life, was needs-triage
24.04 LTS noble
Fixed 2.9.14+dfsg-1.3ubuntu3.7
22.04 LTS jammy
Fixed 2.9.13+dfsg-1ubuntu0.11
20.04 LTS focal
Fixed 2.9.10+dfsg-5ubuntu0.20.04.10+esm4
18.04 LTS bionic
Fixed 2.9.4+dfsg1-6.1ubuntu1.9+esm7
16.04 LTS xenial
Fixed 2.9.3+dfsg1-1ubuntu0.7+esm12
14.04 LTS trusty
Fixed 2.9.1+dfsg1-3ubuntu4.13+esm11

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Notes

mdeslaur

This is just a recursive parsing issue, and per the libxml2 developers it "can only be triggered with untrusted SGML catalogs and it makes absolutely no sense to use untrusted catalogs". Marking as low priority.

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

Parameter Value
Base score 3.3 · Low
Attack vector Local
Attack complexity Low
Privileges required Low
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact Low
Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

References

Related Ubuntu Security Notices (USN)

    • USN-7974-1
    • libxml2 vulnerabilities
    • 22 January 2026

Other references