CVE-2026-48208 PUBLISHED

Denial-of-Service via SVG Rendering in Ticket

Assigner: OTRS
Reserved: 21.05.2026 Published: 01.06.2026 Updated: 01.06.2026

An improper neutralization of active SVG content in OTRS or ((OTRS)) Community Edition ticket article rendering allows attackers to inject specially crafted SVG payloads via email content, leading to browser-side resource exhaustion and denial of service when affected tickets are opened by an agent or customer. The issue can be exploited without JavaScript execution and is not mitigated by the configured Content Security Policy (CSP).

This issue affects OTRS:

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

Please note that ((OTRS)) Community Edition 6.x and before are vulnerable. Products based on the ((OTRS)) Community Edition also very likely to be affected

Metrics

CVSS 3.1

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
CVSS Score: 6.5

Attack Vector	Network	Scope	Unchanged
Attack Complexity	Low	Confidentiality Impact	None
Privileges Required	None	Integrity Impact	None
User Interaction	Required	Availability Impact	High

CVSS 3.1

Product Status

Vendor	OTRS AG
Product	OTRS
Versions	Default: affected Version 7.0.x is affected Version 8.0.x is affected Version 2023.x is affected Version 2024.x is affected Version 2025.x is affected affected from 2026.x to 2026.3.x (incl.)

Vendor	OTRS AG
Product	((OTRS)) Community Edition
Versions	Default: affected Version 6.x is affected

Solutions

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

Credits

Special thanks to Daniel Triznafor reporting this vulnerability reporter

References

https://otrs.com/release-notes/otrs-security-advisory-2026-07/

Problem Types

CWE-400 Uncontrolled Resource Consumption CWE
CWE-791 Incomplete Filtering of Special Elements CWE

Impacts

CAPEC-130 Excessive Allocation