Vulnerability · Published Jun 1, 2026 · Assigned by OTRS
CVE-2026-48188SQL Injection via MySQL Quote Method
Critical 9.1
In plain English
A critical-severity improper input validation in OTRS from OTRS AG. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.7% (higher than 55% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code. Fixed versions are available - upgrade the affected package.
Official 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 packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | znuny | no fix listed | DEBIAN-CVE-2026-48188 |
| Debian:13 | znuny | no fix listed | DEBIAN-CVE-2026-48188 |
| Debian:14 | znuny | 6.5.25-1 | DEBIAN-CVE-2026-48188 |
| Ubuntu:22.04:LTS | otrs2 | no fix listed | UBUNTU-CVE-2026-48188 |
| Ubuntu:24.04:LTS | znuny | no fix listed | UBUNTU-CVE-2026-48188 |
| Ubuntu:26.04:LTS | znuny | no fix listed | UBUNTU-CVE-2026-48188 |
| Ubuntu:26.10 | znuny | no fix listed | UBUNTU-CVE-2026-48188 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| OTRS AG | OTRS | 7.0.x8.0.x2023.x2024.x2025.x2026.x – through 2026.3.x |
| OTRS AG | ((OTRS)) Community Edition | 6.x |
Weakness: CWE-20 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N