CVE-2026-48188

EUVD-2026-33552

01.06.2026, 04:16

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

Provider	Type	Base Score	Atk. Vector	Atk. Complexity	Priv. Required	Vector
NIST	Primary	9.1 CRITICAL	NETWORK	LOW	NONE	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Base Score

CVSS 3.x

EPSS Score

Percentile: 40.58%

Affected Products (NVD)

Vendor	Product	Version
otrs	otrs	𝑥 ≤ 6.0.32
otrs	otrs	7.0.0 ≤ 𝑥 ≤ 8.0.37
otrs	otrs	2023.0.0 ≤ 𝑥 < 2026.4.1

𝑥

= Vulnerable software versions

Debian Releases

Debian Product

Codename

znuny

bookworm	ignored
bookworm/non-free	vulnerable
forky/non-free	6.5.25-1 fixed
sid/non-free	6.5.25-1 fixed
trixie	no-dsa
trixie/non-free	vulnerable

Ubuntu Releases

Ubuntu Product

Codename

znuny

jammy	dne
noble	needs-triage
resolute	needs-triage

otrs2

bionic	needs-triage
focal	needs-triage
jammy	needs-triage
noble	dne
resolute	dne
xenial	needs-triage

Common Weakness Enumeration

CWE-20 - Improper Input Validation
The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.

References

https://otrs.com/release-notes/otrs-security-advisory-2026-02/