Description
An improper Input Validation vulnerability in OTRS or ((OTRS)) Community Edition database layer module allows an unauthenticated SQL injection which can lead to an authentication bypass. This issue only affects the system if the MySQL/MariaDB server is configured with the NO_BACKSLASH_ESCAPES SQL mode.
This issue affects OTRS:
* 7.0.X
* 8.0.X
* 2023.X
* 2024.X
* 2025.X
* 2026.X before 2026.4.X
* (OTRS)) Community Edition: 6.0.x
Products based on the ((OTRS)) Community Edition also very likely to be affected
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| OTRS | OTRS | 7.0.x, 8.0.x, 2023.x, 2024.x, 2025.x, 2026.x – ≤ 2026.3.x | — |
| OTRS | ((OTRS)) Community Edition | 6.x | — |
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 | 6.5.25-1 | — |
| Debian 13 | znuny | No fix yet | — |
| Debian 12 | znuny | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | znuny | No fix yet | — |
| Ubuntu 26.04 LTS | znuny | No fix yet | — |
| Ubuntu 24.04 LTS | znuny | No fix yet | — |
| Ubuntu 22.04 LTS | otrs2 | No fix yet | — |
| Ubuntu 20.04 LTS | otrs2 | No fix yet | — |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 18.04 LTS | otrs2 | No fix yet | — |
| Ubuntu 16.04 LTS | otrs2 | No fix yet | — |
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
GitHub 1 repository
-
Habuon/CVE-2026-48188 ★ 1 · May 25, 2026
This is POC repo for CVE-2026-48188
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Advisories 2
- WID-SEC-2026-3416 Znuny: Mehrere Schwachstellen BSI CERT-Bund (WID) · Sep 16, 2026
- WID-SEC-2026-1748 OTRS: Mehrere Schwachstellen BSI CERT-Bund (WID) · May 31, 2026