CVE-2026-0989
3.7 · LOWOverview
CVE-2026-0989 is a low-severity vulnerability affecting xmlsoft libxml2. It was published on January 15, 2026 and has a CVSS 3.1 base score of 3.7 (LOW).
This vulnerability has a CVSS 3.1 base score of 3.7, rated LOW. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical Description
A flaw was identified in the RelaxNG parser of libxml2 related to how external schema inclusions are handled. The parser does not enforce a limit on inclusion depth when resolving nested <include> directives. Specially crafted or overly complex schemas can cause excessive recursion during parsing. This may lead to stack exhaustion and application crashes, creating a denial-of-service risk.
Remediation
Check the references section for vendor advisories and patches from xmlsoft. Update libxml2 to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| xmlsoft | libxml2 | >= 0, < 2.15.2 | Affected |
| ibm | vios | >= 4.1.0, < 4.1.1.30 | Affected |
| ibm | aix | >= 7.2.5, < 7.2.5.12 | Affected |
Frequently Asked Questions
What is CVE-2026-0989?
CVE-2026-0989 is a low-severity vulnerability affecting xmlsoft libxml2. It was published on January 15, 2026 and has a CVSS 3.1 base score of 3.7 (LOW).
How severe is CVE-2026-0989?
This vulnerability has a CVSS 3.1 base score of 3.7, rated LOW. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2026-0989?
Check the references section for vendor advisories and patches from xmlsoft. Update libxml2 to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2026-0989?
CyberStrike's AI-powered security agents can automatically detect CVE-2026-0989 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
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