CVE-2026-33322
JWT algorithm confusion lets forging tokens via OIDC to obtain S3 credentials.
Is CVE-2026-33322 being exploited?
Not confirmed. CVE-2026-33322 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.41% probability of exploitation in the next 30 days.
How severe is CVE-2026-33322?
CVE-2026-33322 is rated Critical with a CVSS score of 9.2. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-33322?
Yes. A fix has been recorded for CVE-2026-33322. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-33322 affect?
CVE-2026-33322 affects MinIO OpenID Connect authentication. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-33322?
Patch to patched release; rotate credentials.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Attacker with OIDC ClientSecret can forge tokens to access S3 with any policy (e.g., consoleAdmin).
Immediate action required