Rancher is widely used for container/cluster management; retained credentials post-logout can give persistent unauthorized access across infrastructure, making this broadly impactful.
CVE-2026-88805
Rancher logout fails to clear credentials, allowing retained access.
Is CVE-2026-88805 being exploited?
Not confirmed. CVE-2026-88805 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 0.25% probability of exploitation in the next 30 days.
How severe is CVE-2026-88805?
CVE-2026-88805 is rated High with a CVSS score of 8.1. 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-2026-88805?
Yes. A fix has been recorded for CVE-2026-88805. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-88805 affect?
CVE-2026-88805 affects SUSE Rancher 2.15 (< 2.15.2). Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-88805?
Upgrade Rancher to 2.15.2 immediately
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Remote attackers can retain credentials after logout, enabling unauthorized access and control of Rancher and managed clusters.
Immediate action required
- affected>= 2.15.0 and < 2.15.2
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.