Home / Security / Advisories / NTAP-20260918-0011
NTAP-20260918-0011 — CVE-2026-33948 jq Vulnerability in NetApp Products
Published 2026-09-18 · Updated 2026-09-18 · Status: Interim · Exploitation: Public · Severity: MEDIUM 5.3 · ONTAP affected: Yes
Product family: ONTAP · SolidFire / NetApp HCI | ONTAP-relevant | highest CVSS: 5.3
CVEs in this advisory
- CVE-2026-33948 — MEDIUM · CVSS 5.3 · site index
What the CVE records say
CVE-2026-33948 — jq is a command-line JSON processor. Commits before 6374ae0bcdfe33a18eb0ae6db28493b1f34a0a5b contain a vulnerability where CLI input parsing allows validation bypass via embedded NUL bytes. When reading JSON from files or stdin, jq uses strlen() to determine buffer length instead of the actual byte count from fgets(), causing it to truncate input at the first NUL byte and parse only the preceding prefix. This enables an attacker to craft input with a benign JSON prefix before a NUL byte followed by malicious trailing data, where jq validates only the prefix as valid JSON while silently discarding the suffix. Workflows relying on jq to validate untrusted JSON before forwarding it to downstream consumers are susceptible to parser differential attacks, as those consumers may process the full input including the malicious trailing bytes. This issue has been patched by commit 6374ae0bcdfe33a18eb0ae6db28493b1f34a0a5b.
Impact
Successful exploitation of this vulnerability could lead to addition or modification of data.
Affected products
- Cloud Volumes ONTAP Mediator
- NetApp SolidFire & HCI Management Node
- NetApp SolidFire & HCI Storage Node (Element Software)
References
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.
Related reading
- Common ONTAP problems (FAQ) — plain-language symptoms and fixes
- ONTAP security hardening — baseline lockdown guidance
- Ransomware protection on ONTAP — SnapLock, SnapMirror vaulting, Anomaly Detection
- ONTAP error messages index — EMS/WAFL/NFS/SnapMirror messages
- Every NetApp advisory published in 2026