CVE-2026-48208: Denial-of-Service via SVG Rendering in Ticket
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
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
OTRS (OTRS Community Edition)to a version that resolves this vulnerability.Fixed in 2026.4.1
Event History
Frequently Asked Questions
What is CVE-2026-48208?
CVE-2026-48208 is a vulnerability in OTRS that allows for denial-of-service attacks via improper SVG rendering in ticket articles.
What is the severity of CVE-2026-48208?
CVE-2026-48208 has a medium severity score of 6.5.
How do I fix CVE-2026-48208?
To fix CVE-2026-48208, update to OTRS version 2026.4.1 or later.
What software is affected by CVE-2026-48208?
CVE-2026-48208 affects OTRS and OTRS Community Edition software.
What type of attack can CVE-2026-48208 facilitate?
CVE-2026-48208 can facilitate denial-of-service attacks through resource exhaustion in affected agents' browsers.