CVE-2021-46876 /user/sessions endpoint allows detecting valid accounts
Attackers can determine account existence via the /user/sessions endpoint, enabling user enumeration attacks against Ibexa Kernel installations.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2021-46876?
CVE-2021-46876 is a medium-severity vulnerability in n/a, published on 12 Mar 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
An issue was discovered in eZ Publish Ibexa Kernel before 7.5.15.1. The /user/sessions endpoint can be abused to determine account existence.
Weakness: CWE-203
Which versions are affected by CVE-2021-46876?
4 open source packages ship an affected version, including ezsystems/ezpublish-kernel. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
ezsystems/ezpublish-kernel Packagist | From 6.13.0 | 6.13.8.1 |
ezsystems/ezpublish-kernel Packagist | From 6.13.0 | 6.13.8.1 |
ezsystems/ezpublish-kernel Packagist | From 7.5.0 | 7.5.15.1 |
ezsystems/ezpublish-kernel Packagist | From 7.5.0 | 7.5.15.1 |
Products include Ibexa Ez Platform Kernel.
How do I fix CVE-2021-46876?
Upgrade ezsystems/ezpublish-kernel to a fixed version for your release line: 6.13.8.1 or 7.5.15.1.
Is CVE-2021-46876 being exploited?
There is no known exploitation of CVE-2021-46876 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as GHSA-gmrf-99gw-vvwj.