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NTAP-20260918-0002 — CVE-2026-40164 jq Vulnerability in NetApp Products
Published 2026-09-18 · Updated 2026-09-18 · Status: Interim · Exploitation: Public · Severity: HIGH 7.5 · ONTAP affected: No — other NetApp product
Product family: SolidFire / NetApp HCI | other NetApp product | highest CVSS: 7.5
CVEs in this advisory
- CVE-2026-40164 — HIGH · CVSS 7.5 · site index
What the CVE records say
CVE-2026-40164 — jq is a command-line JSON processor. Before commit 0c7d133c3c7e37c00b6d46b658a02244fdd3c784, jq used MurmurHash3 with a hardcoded, publicly visible seed (0x432A9843) for all JSON object hash table operations, which allowed an attacker to precompute key collisions offline. By supplying a crafted JSON object (~100 KB) where all keys hashed to the same bucket, hash table lookups degraded from O(1) to O(n), turning any jq expression into an O(n²) operation and causing significant CPU exhaustion. This affected common jq use cases such as CI/CD pipelines, web services, and data processing scripts, and was far more practical to exploit than existing heap overflow issues since it required only a small payload. This issue has been patched in commit 0c7d133c3c7e37c00b6d46b658a02244fdd3c784.
Impact
Successful exploitation of this vulnerability could lead to Denial of Service (DoS).
Affected products
- NetApp SolidFire & HCI Management Node
- NetApp SolidFire & HCI Storage Node (Element Software)
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