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NTAP-20261009-0002 — CVE-2026-72636 Elasticsearch Vulnerability in NetApp Products
Published 2026-10-09 · Updated 2026-10-09 · Status: Interim · Exploitation: Public · Severity: MEDIUM 6.5 · ONTAP affected: No — other NetApp product
Product family: Brocade SAN firmware | other NetApp product | highest CVSS: 6.5
CVEs in this advisory
- CVE-2026-72636 — MEDIUM · CVSS 6.5 · site index
What the CVE records say
CVE-2026-72636 — Uncontrolled Recursion (CWE-674) in the Elasticsearch wildcard matching helper can lead to a denial of service via Excessive Allocation (CAPEC-130). The matcher used to resolve wildcard patterns against names is implemented recursively and had no bound on recursion depth or on the total number of match operations performed. A search request containing a wildcard pattern with a large number of wildcard groups, evaluated against a sufficiently long name, exhausts the thread stack. Elasticsearch treats a stack overflow as an unrecoverable condition and shuts the node down, so the request terminates the affected node rather than failing gracefully.
Impact
Successful exploitation of this vulnerability could lead to Denial of Service (DoS).
Affected products
- Brocade SAN Navigator (SANnav)
References
What to do
- Compare your installed product and version against the affected list above and the official advisory's affected-versions table.
- Apply the fixed release named in the official advisory, or the documented workaround if no fix ships yet.
- Limit management-plane exposure (BMC/management interfaces, web UIs, SNMP) until patched.
- Track follow-ups in the site CVE index and the security RSS feed.
Related reading
- Site CVE index — every CVE we track, split by year
- Security hub — recent NetApp advisories and what changed
- Security hardening baseline — applies to NetApp management planes generally
- Every NetApp advisory published in 2026