Reflected XSS in authenticated agent context

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Summary

CVECVE-2026-48209
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 user-controllable input in OTRS or ((OTRS)) Community Edition ticket handling allows authenticated attackers to perform reflected cross-site scripting (XSS) attacks via crafted request parameters associated with ticket actions. By injecting malicious JavaScript into manipulated request URLs, attackers can execute arbitrary script code in the context of an authenticated agent session when the crafted link is opened. This issue affects OTRS: * 7.0.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 7.1 HIGH from [email protected]

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

Problem Types: CWE-79 | CWE-116 | CWE-79 CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') | CWE-116 CWE-116 Improper Encoding or Escaping of Output

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary7.1HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:H/A:N
3.1CNACVSS7.1HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:H/A:N

CVSS v3.1 Breakdown

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

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA OTRS AG OTRS affected 7.0.x Not specified
CNA OTRS AG OTRS Community Edition affected 6.x Not specified

References

ReferenceSourceLinkTags
otrs.com/release-notes/otrs-security-advisory-2026-08 [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 William Bastos (@chor4o) for reporting this vulnerability (en)

Additional Advisory Data

Solutions

CNA: Update to latest version of OTRS (2026.4.1. or later). Please note that there will be no OTRS 7 patches

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