CVE-2026-44946
SAML replay allows impersonation via nonces in Rancher ACS.
Is CVE-2026-44946 being exploited?
Not confirmed. CVE-2026-44946 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 0.39% probability of exploitation in the next 30 days.
How severe is CVE-2026-44946?
CVE-2026-44946 is rated Critical with a CVSS score of 9.5. 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-2026-44946?
Yes. A fix has been recorded for CVE-2026-44946. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-44946 affect?
CVE-2026-44946 affects Rancher 2.14.0 - 2.14.3. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-44946?
Upgrade to 2.14.3+, review SAML config, rotate credentials.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Auth bypass: replayed SAML enables attacker to impersonate users and access Rancher resources.
Immediate action required
- affected>= 2.14.0 and < 2.14.3
- affected>= 2.13.0 and < 2.13.7
- affected>= 2.12.0 and < 2.12.11
- affected>= 2.11.0 and < 2.11.15
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.