Widely deployed cloud infra (OpenStack); privilege escalation via forged OAuth headers could disrupt tenants across many organizations.
CVE-2026-22797
Privilege escalation via forged OAuth2 headers in OpenStack keystonemiddleware.
Is CVE-2026-22797 being exploited?
Not confirmed. CVE-2026-22797 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 0.66% probability of exploitation in the next 30 days.
How severe is CVE-2026-22797?
CVE-2026-22797 is rated Critical with a CVSS score of 9.9. 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-2026-22797?
Yes. A fix has been recorded for CVE-2026-22797. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-22797 affect?
CVE-2026-22797 affects OpenStack keystonemiddleware external_oauth2_token (versions 10.5–10.12 prior to 10.12.1). Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-22797?
Upgrade to fixed versions: 10.7.2+, 10.9.1+, or 10.12.1+.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Authenticated attacker can escalate privileges or impersonate users by forging identity headers in external_oauth2_token.
Immediate action required
- affected>= 10.5.0 and < 10.7.2
- affected>= 10.8.0 and < 10.9.1
- affected>= 10.10.0 and < 10.12.1
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.