CVE-2019-10641 Contao Does Not Invalidate Existing Sessions When Password Changes

Critical 9.8 Published 17 Apr 2019 Updated 4 Aug 2024

Weak password recovery mechanism in Contao CMS allows attackers to bypass authentication and take over user accounts.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: Available

What is CVE-2019-10641?

CVE-2019-10641 is a critical authentication bypass vulnerability in n/a, published on 17 Apr 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Contao before 3.5.39 and 4.x before 4.7.3 has a Weak Password Recovery Mechanism for a Forgotten Password.

Weakness: CWE-640

Which versions are affected by CVE-2019-10641?

10 open source packages ship an affected version, including contao/contao, contao/core and contao/core-bundle. It affects 1 product.

Package	Affected	Fixed in
`contao/contao` Packagist	From `4.0.0`	`4.4.37`
`contao/contao` Packagist	From `4.0.0`	`4.4.37`
`contao/contao` Packagist	From `4.5.0`	`4.7.3`
`contao/contao` Packagist	From `4.5.0`	`4.7.3`
`contao/core` Packagist	From `3.0.0`	`3.5.39`
`contao/core` Packagist	From `3.0.0`	`3.5.39`

4 more packages

`contao/core-bundle` Packagist	From `4.0.0`	`4.4.37`
`contao/core-bundle` Packagist	From `4.0.0`	`4.4.37`
`contao/core-bundle` Packagist	From `4.5.0`	`4.7.3`
`contao/core-bundle` Packagist	From `4.5.0`	`4.7.3`

Products include Contao Contao Cms.

How do I fix CVE-2019-10641?

Upgrade contao/contao to a fixed version for your release line: 4.4.37 or 4.7.3.

Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.

Is CVE-2019-10641 being exploited?

There is no known exploitation of CVE-2019-10641 in the wild and no public exploit code.

Sources

Also known as GHSA-vcgg-hp4r-87gx.