CVE-2021-26600 Type Confusion in ImpressCMS
Attackers can bypass authentication in ImpressCMS due to a type confusion vulnerability in the autologin plugin.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2021-26600?
CVE-2021-26600 is a critical authentication bypass vulnerability in n/a, published on 28 Mar 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
ImpressCMS before 1.4.3 has plugins/preloads/autologin.php type confusion with resultant Authentication Bypass (!= instead of !==).
Weakness: CWE-843
Which versions are affected by CVE-2021-26600?
2 open source packages ship an affected version, including impresscms/impresscms. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
impresscms/impresscms Packagist | All versions | 1.4.3 |
impresscms/impresscms Packagist | All versions | 1.4.3 |
Products include Impresscms Impresscms.
How do I fix CVE-2021-26600?
Upgrade impresscms/impresscms to 1.4.3 or later.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2021-26600 being exploited?
There is no known exploitation of CVE-2021-26600 in the wild and no public exploit code.
Other vulnerabilities in n/a
- CVE-2008-3453 Multiple unspecified vulnerabilities in ImpressCMS 1.0 have unknown impact and attack vectors, related to modules/admin.php and "a few files
- CVE-2021-26599 SQL Injection in ImpressCMS
- CVE-2022-24977 Path Traversal in ImpressCMS
- CVE-2022-50912 ImpressCMS 1.4.4 - Unrestricted File Upload
- CVE-2021-26601 Path Traversal in ImpressCMS
Sources
Also known as GHSA-m8xh-cqc2-5q6f.