CVE-2026-48187

EUVD-2026-33553
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
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
5.7 MEDIUM
NETWORK
LOW
LOW
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 10%
Affected Products (NVD)
VendorProductVersion
otrsotrs
𝑥
≤ 6.0.32
otrsotrs
7.0.0 ≤
𝑥
≤ 8.0.37
otrsotrs
2023.0.0 ≤
𝑥
< 2026.4.1
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
https://otrs.com/release-notes/otrs-security-advisory-2026-06/