CVE-2026-48187

Email with special content can lead to DoS

MEDIUM
5.7
CVSS Score
Published: June 1, 2026 at 03:33 AM UTC
Updated: July 22, 2026 at 07:37 AM UTC
1 product affected across 1 vendorOTRS

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Severity
MEDIUM5.7
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

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

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v ≤ 6.0.322023.0.0 ≤ v < 2026.4.12026.x ≤ v ≤ 2026.3.x7.0.0 ≤ v ≤ 8.0.372023.x2024.x2025.x2026.x8.0.x
Affected range stops below 2026.4.1, so it looks safe — our inference, not a vendor statement
Vendor states this is fixed in 6.x (unknown)
Vendor states this is fixed in 7.0.x (unknown)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (1)

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.7MEDIUMOTRS
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-400CWE-770

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