Description
Improper Input Validation vulnerability in the ContentType parameter for attachments on TicketCreate or TicketUpdate operations of the OTRS Generic Interface modules allows any authenticated attacker to to perform an host header injection for the ContentType header of the attachment.
This issue affects OTRS: from 7.0.X before 7.0.45, from 8.0.X before 8.0.35; ((OTRS)) Community Edition: from 6.0.1 through 6.0.34.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| OTRS | OTRS | 7.0.x – < 7.0.45, 8.0.x – < 8.0.35 | 7.0.45 |
| OTRS | ((OTRS)) Community Edition | 6.0.1 – ≤ 6.0.34 | — |
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 14 | znuny | 6.5.3-1 | — |
| Debian 13 | znuny | 6.5.3-1 | — |
| Debian 12 | znuny | No fix yet | — |
| Debian 10 | otrs2 | 6.0.16-2+deb10u1 | DLA-3551-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | znuny | No fix yet | — |
| Ubuntu 26.04 LTS | znuny | No fix yet | — |
| Ubuntu 25.10 | znuny | No fix yet | — |
| Ubuntu 24.04 LTS | znuny | No fix yet | — |
| Ubuntu 22.04 LTS | otrs2 | No fix yet | — |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 20.04 LTS | otrs2 | No fix yet | — |
| Ubuntu 18.04 LTS | otrs2 | No fix yet | — |
| Ubuntu 16.04 LTS | otrs2 | No fix yet | — |
Advisories 1
- DLA-3551-1 otrs2 - security update Debian Security (DSA / DLA) · Mar 9, 2026