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NTAP-20260220-0013 — CVE-2026-0990 Libxml2 Vulnerability in NetApp Products

Published 2026-02-20 · Updated 2026-10-07 · Status: Interim · Exploitation: Public · Severity: MEDIUM 5.9 · ONTAP affected: Yes

Official advisory: NTAP-20260220-0013 on security.netapp.com ↗. Affected versions, fixed releases, and workarounds live there — this page is a summary.

Product family: Other NetApp products · ONTAP · SolidFire / NetApp HCI · SnapCenter | ONTAP-relevant | highest CVSS: 5.9

CVEs in this advisory

CVE-2026-0990 — MEDIUM · CVSS 5.9 · site index

What the CVE records say

CVE-2026-0990 — A flaw was found in libxml2, an XML parsing library. This uncontrolled recursion vulnerability occurs in the xmlCatalogXMLResolveURI function when an XML catalog contains a delegate URI entry that references itself. A remote attacker could exploit this configuration-dependent issue by providing a specially crafted XML catalog, leading to infinite recursion and call stack exhaustion. This ultimately results in a segmentation fault, causing a Denial of Service (DoS) by crashing affected applications.

Impact

Successful exploitation of this vulnerability could lead to Denial of Service (DoS).

Affected products

NetApp Manageability SDK
ONTAP 9
Cloud Volumes ONTAP Mediator
NetApp SMI-S Provider
NetApp SolidFire & HCI Management Node
NetApp SolidFire & HCI Storage Node (Element Software)
ONTAP tools for VMware vSphere 10
SnapCenter Plug-in for VMware vSphere

Official fixes

NetApp Manageability SDK — vendor fix ↗
ONTAP 9 — vendor fix ↗
ONTAP 9 — vendor fix ↗
ONTAP 9 — vendor fix ↗

References

https://nvd.nist.gov/vuln/detail/CVE-2026-0990 ↗

What to do

Check the affected products listed above against the official advisory's affected-versions table — that is where the exact ONTAP 9 release, ONTAP tool, or management product versions are named.
If affected and a fixed release exists, plan the upgrade — see the ONTAP upgrade runbook.
If exploitation is listed as "active", treat remediation as urgent and review exposure (management LIFs, ONTAP S3, SnapMirror endpoints).
Harden in parallel: security hardening baseline and ransomware protection on ONTAP.