CVE-2026-48187

Email with special content can lead to DoS

Published Jun 1, 2026 CVSS 3.1 · 5.7 Medium EPSS < 1% KEV · Not listed
Description
An uncontrolled allocation of resources without limits or throttling in the e-mail handling in OTRS allows excessive allocation which may lead to the abortion of the webserver.This issue affects OTRS:

* 8.0.X
* 2023.X
* 2024.X
* 2025.X
* 2026.X before 2026.4.X

Please note that ((OTRS)) Community Edition 6.x, OTRS 7.x and products based on the ((OTRS)) Community Edition also very likely to be affected

Remediation

Vendor Solution

Update to OTRS 2026.4.1. or later. Please note that there will be no OTRS 7 patches

Tracking

Sign in to view the affected projects.

Advisories

No advisories available
History
Type Values Removed Values Added
CPEs cpe:2.3:a:otrs:otrs:*:*:*:*:*:*:*:*
cpe:2.3:a:otrs:otrs:*:*:*:*:community:*:*:*
Type Values Removed Values Added
First Time appeared Otrs
Otrs otrs
Otrs otrs Community Edition
Vendors & Products Otrs
Otrs otrs
Otrs otrs Community Edition
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description An uncontrolled allocation of resources without limits or throttling in the e-mail handling in OTRS allows excessive allocation which may lead to the abortion of the webserver.This issue affects OTRS: * 8.0.X * 2023.X * 2024.X * 2025.X * 2026.X before 2026.4.X Please note that ((OTRS)) Community Edition 6.x, OTRS 7.x and products based on the ((OTRS)) Community Edition also very likely to be affected
Title Email with special content can lead to DoS
Weaknesses CWE-400
CWE-770
References
Metrics cvssV3_1

{'score': 5.7, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
OTRS
Published
Updated
Jun 1, 2026, 1:17 PM
Reserved
May 21, 2026, 7:53 AM
Status
Analyzed
Published
Jun 1, 2026, 4:16 AM
Modified
Jul 22, 2026, 7:10 AM