Critical severity · published Jun 1, 2026
CVE-2026-48188
SQL Injection via MySQL Quote Method
9.1
CVSS
0.7%
EPSS
No
On KEV
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
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.7% · higher than 54% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
OC
((OTRS)) Community Edition · OTRS AG
6.x · source: vendor
OT
OTRS · OTRS AG
7.0.x; 8.0.x; 2023.x; 2024.x; 2025.x; 2026.x through 2026.3.x · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-48188
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-48188
Vendor Advisory
https://otrs.com/release-notes/otrs-security-advisory-2026-02/
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