Vulnerability · Published Aug 26, 2022 · Assigned by redhat
CVE-2021-3754
Medium 5.3
In plain English
A medium-severity improper input validation in keycloak. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 2.2% (higher than 83% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code. Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)5.3Medium
Exploit odds (30 days)2.2%top 17.5% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack tooling1Public PoC
Official description
A flaw was found in keycloak where an attacker is able to register himself with the username same as the email ID of any existing user. This may cause trouble in getting password recovery email in case the user forgets the password.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Maven | org.keycloak:keycloak-services | 24.0.1 | GHSA-4vc8-pg5c-vg4x |
Affected products (as reported)
Weakness: CWE-20
References
- https://bugzilla.redhat.com/show_bug.cgi?id=1999196 x_refsource_MISC
- https://access.redhat.com/security/cve/CVE-2021-3754 x_refsource_MISC