CVE-2020-9389 json
A username enumeration issue was discovered in SquaredUp before version 4.6.0.
published 2021-02-03 5 y ago modified 2026-06-17 4 mo ago also EUVD-2020-30210
- cvss
- 3.7
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.9%
- EPSS 0.9% chance of exploitation in 30 days, percentile 61%
- public exploits
- 0
- none known
Summary
A username enumeration issue was discovered in SquaredUp before version 4.6.0. The login functionality was implemented in a way that would enable a malicious user to guess valid username due to a different response time from invalid usernames.
Exploit prediction
0.94% chance of exploitation in the next 30 days, higher than 61% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 3.7 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N |
| NVD | 2.0 | 4.3 | AV:N/AC:M/Au:N/C:P/I:N/A:N |
Classification
- Weakness
-
- CWE-203 Observable Discrepancy
References
-
support.squaredup.com
/hc/en-us/articles/360017255858
broken-link, vendor-advisory
-
support.squaredup.com
/hc/en-us/articles/360019427238-CVE-2020-9389-Username-enumeration-possible-via-a-timing-attack
broken-link, vendor-advisory
Sources
- CVE List CVE-2020-9389
- NVD CVE-2020-9389
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.