CVE-2021-46876
/user/sessions endpoint allows detecting valid accounts
Description
This Security Advisory is about a vulnerability in eZ Platform v1.13, v2.5, and v3.2, and in Ibexa DXP and Ibexa Open Source v3.3. The /user/sessions endpoint can let an attacker detect if a given username or email refers to a valid account. This can be detected through differences in the response data or response time of certain requests. The fix ensures neither attack is possible. The fix is distributed via Composer. If you come across a security issue in our products, here is how you can report it to us: https://doc.ibexa.co/en/latest/guide/reporting_issues/#toc
How to fix CVE-2021-46876
To remediate CVE-2021-46876, upgrade the affected package to a fixed version below.
- —upgrade to 6.13.8.1 or later
- —upgrade to 6.13.8.1 or later
Is CVE-2021-46876 being exploited?
Low — EPSS is 0.5%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- >= 6.13.0, < 6.13.8.1
- >= 6.13.0, < 6.13.8.1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N |