Quick answers
- Is CVE-2026-88805 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-88805 being exploited in the wild.
- How severe is CVE-2026-88805?
- High severity, with a CVSS score of 8.1, published 28 September 2026.
- Which products and versions are affected?
- Suse Rancher >=2.15.0, <2.15.2.
- Is there a fix for CVE-2026-88805?
- A patch was published on 2026-09-23: Rancher v2.15.2 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-88805 attacked?
- It is attacked over the network, in a web application.
- Am I affected by CVE-2026-88805?
- Check whether you run Suse Rancher at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
A session revocation flaw in Rancher's logout handler fails to delete public API session tokens from the backing store when a user logs out, though browser-side cookies are cleared. The vulnerability requires the attacker to have already obtained a valid session token through an external means (client compromise, proxy leakage, or logging). Tokens remain valid until their configured TTL or idle timeout expires, allowing persistent authenticated access. The fix routes the session token identifier correctly to the deletion logic and adds logging for failed deletions.
Affected products
- SUSE Rancher >=2.15.0, <2.15.2
Timeline
- 2026-09-28: disclosed
- 2026-09-23: patched: Rancher v2.15.2