Denial-of-Service via SVG Rendering in Ticket

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Summary

CVECVE-2026-48208
StatePUBLISHED
AssignerOTRS
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-06-01 04:16:23 UTC
Updated2026-06-01 04:16:23 UTC
DescriptionAn 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

Risk And Classification

Primary CVSS: v3.1 6.5 MEDIUM from [email protected]

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

Problem Types: CWE-400 | CWE-791 | CWE-400 CWE-400 Uncontrolled Resource Consumption | CWE-791 CWE-791 Incomplete Filtering of Special Elements

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary6.5MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
3.1CNACVSS6.5MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

CVSS v3.1 Breakdown

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

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA OTRS AG OTRS affected 7.0.x Not specified
CNA OTRS AG OTRS affected 8.0.x Not specified
CNA OTRS AG OTRS affected 2023.x Not specified
CNA OTRS AG OTRS affected 2024.x Not specified
CNA OTRS AG OTRS affected 2025.x Not specified
CNA OTRS AG OTRS affected 2026.x 2026.3.x patch Not specified
CNA OTRS AG OTRS Community Edition affected 6.x Not specified

References

ReferenceSourceLinkTags
otrs.com/release-notes/otrs-security-advisory-2026-07 [email protected] otrs.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: Special thanks to Daniel Triznafor reporting this vulnerability (en)

Additional Advisory Data

Solutions

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

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