CVE-2021-20440 json
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.
published 2021-03-15 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-7858
- cvss
- 6.4
- version 3.0, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.7%
- EPSS 0.7% chance of exploitation in 30 days, percentile 53%
- public exploits
- 0
- none known
Summary
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.
Exploit prediction
0.71% chance of exploitation in the next 30 days, higher than 53% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.0 | 6.4 | 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 |
| NVD | 3.1 | 4.3 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N |
| CNA | 3.0 | 6.4 | CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:L/A:L |
| NVD | 2.0 | 4.0 | AV:N/AC:L/Au:S/C:N/I:P/A:N |
Affected products
- IBM API Connect
References
-
ibm.com
/support/pages/node/6430107
vendor-advisory
-
exchange.xforce.ibmcloud.com
/vulnerabilities/196536
vdb-entry, vendor-advisory
Sources
- CVE List CVE-2021-20440
- NVD CVE-2021-20440
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