ZDF
Sign inSign up

Vulnerabilities

Vulnerability · CVE-2026-86143

CVE-2026-86143 is listed by USN-8910-1: libxml2 vulnerabilities.

Published Oct 8, 2026 · Canonical Ubuntu

Last checked Oct 26, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2026-86143. EPSS is 0.19%. Act only if a listed version of Canonical Ubuntu is installed.

Gaps on this record

  • No version range is stored. A customer cannot check an installed version against this record.
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.

Same product and reporting

Severity
Unknown—
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.19%
Remediation
Vendor / distro source
Affected products
Canonical Ubuntu

CVE-2026-86143 is listed by USN-8910-1: libxml2 vulnerabilities.

No affected version ranges are stored yet. Use the vendor advisory before you decide this record does not apply.

How to fix CVE-2026-86143

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-86143. EPSS is 0.19%. Act only if a listed version of Canonical Ubuntu is installed.

Which versions are affected?

Affected version ranges are not on this record. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 0.19%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Technology hubs

Ubuntu security

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Oct 8, 2026 · Ubuntu Security Notices

    Detected

    CVE-2026-86143 is listed by USN-8910-1: libxml2 vulnerabilities.

Sources

  • CVE.orgVulnerability recordCVE-2026-86143

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-86143

    30-day exploitation probability 0.19%

    first.org
  • Ubuntu Security NoticesVendor advisoryCVE-2026-86143

    Yirou Yang discovered that libxml2 incorrectly handled certain XML catalogs. If a user or automated system was tricked into processing a specially crafted XML catalog, an attacker could possibly use this issue to cause libxml2 to crash, resulting in a denial of service. (CVE-2026

    ubuntu.com

Freshness

Last verified in this catalog Oct 26, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • FIRST EPSSOct 23, 2026
  • Ubuntu Security NoticesOct 17, 2026
  • CVE.orgOct 17, 2026