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5.7

OTRS Email Handling Causes Web Server Crash

CVE-2026-48187 · published 5 months ago
Summary

The email handling feature in OTRS can use up too many resources, causing the web server to shut down. This affects multiple versions of OTRS, including the Community Edition. To avoid disruptions, update to the latest version or apply the necessary patches.

Original advisory text
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 OT...
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
References
Fix within
Internet-facing 60 days
Internal At next upgrade
  • Not known to be exploited
  • Needs hands-on effort to exploit
  • Gives an attacker partial control
Severity
5.7 Medium
Exploitation
<1% chance of attack within 30 days
Type
CWE-400Uncontrolled Resource Consumption
CWE-770Allocation of Resources Without Limits
Timeline
Published1 Jun 2026
Updated4 Nov 2026
First seen1 Jun 2026
Sources
CVE-2026-48187 · NVD
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