Description
Drupal 6.x before 6.16 and 5.x before version 5.22 does not properly block users under certain circumstances. A user with an open session that was blocked could maintain their session on the Drupal site despite being blocked.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| drupal6 | drupal6 | 6.x before version 6.16, 5.x before version 5.22 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 5.0 | drupal6 | 6.6-3lenny5 | DSA-2016-1 |
Advisories 1
- DSA-2016-1 drupal6 - several vulnerabilities Debian Security (DSA / DLA) · Mar 9, 2026