Description
Drupal 6.x before 6.13 does not prevent users from modifying user signatures after the associated comment format has been changed to an administrator-controlled input format, which allows remote authenticated users to inject arbitrary web script, HTML, and possibly PHP code via a crafted user signature.
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 | 6.6-3lenny3 | DSA-1930-1 |
Advisories 1
- DSA-1930-1 drupal6 - several vulnerabilities Debian Security (DSA / DLA) · Mar 9, 2026
References
- http://drupal.org/node/507572
- 35681 third-party-advisory
- 1022497 vdb-entry
- 55525 vdb-entry