Description
Gollem before 3.0.13, as used in Horde Groupware Webmail Edition 5.2.22 and other products, is affected by a reflected Cross-Site Scripting (XSS) vulnerability via the HTTP GET dir parameter in the browser functionality, affecting breadcrumb output. An attacker can obtain access to a victim's webmail account by making them visit a malicious URL.
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 12 | php-horde-gollem | 3.0.12-6 | — |
| Debian 8 | php-horde-gollem | 3.0.3-2+deb8u1 | DLA-2229-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 18.04 LTS | php-horde-gollem | No fix yet | — |
| Ubuntu 16.04 LTS | php-horde-gollem | No fix yet | — |
Advisories 1
- DLA-2229-1 php-horde-gollem - security update Debian Security (DSA / DLA) · Mar 9, 2026
References
- https://github.com/horde/gollem/commits/master
- https://lists.horde.org/archives/gollem/Week-of-Mon-20200420/001990.html
- https://github.com/horde/gollem/blob/95b2a4212d734f1b27aaa7a221d2fa1370d2631f/docs/CHANGES
- https://lists.horde.org/archives/announce/2020/001289.html
- [debian-lts-announce] 20200531 [SECURITY] [DLA 2229-1] php-horde-gollem security update mailing-list