RTIR extends RT's HTML scrubber to allow an internal link placeholder, and the extension lets through any link that merely contains the placeholder, including links using the executable javascript: scheme. The change applies to the whole RT instance once RTIR is installed, not only to RTIR's own queues. Anyone who can add HTML content to a ticket on such an instance can store such a link. That includes an unauthenticated sender of HTML email to the Incident Reports queue, which RTIR opens to everyone by default. Script runs when a user clicks the link, in that user's session, and can act in RT with that user's authority. This issue was fixed in versionĀ 5.0.11 and 6.0.4
History

Fri, 30 Oct 2026 18:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Fri, 30 Oct 2026 15:30:00 +0000

Type Values Removed Values Added
Description RTIR extends RT's HTML scrubber to allow an internal link placeholder, and the extension lets through any link that merely contains the placeholder, including links using the executable javascript: scheme. The change applies to the whole RT instance once RTIR is installed, not only to RTIR's own queues. Anyone who can add HTML content to a ticket on such an instance can store such a link. That includes an unauthenticated sender of HTML email to the Incident Reports queue, which RTIR opens to everyone by default. Script runs when a user clicks the link, in that user's session, and can act in RT with that user's authority. This issue was fixed in versionĀ 5.0.11 and 6.0.4
Title Stored XSS via HTML scrubber rule in RTIR
First Time appeared Best Practical Solutions
Best Practical Solutions rt For Incident Response
Weaknesses CWE-79
CPEs cpe:2.3:a:best_practical_solutions:rt_for_incident_response:*:*:*:*:*:*:*:*
Vendors & Products Best Practical Solutions
Best Practical Solutions rt For Incident Response
References
Metrics cvssV4_0

{'score': 5.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: CERT-PL

Published: 2026-10-30T15:22:07.644Z

Updated: 2026-10-30T17:18:22.375Z

Reserved: 2026-10-05T14:00:11.458Z

Link: CVE-2026-105456

cve-icon Vulnrichment

Updated: 2026-10-30T17:08:43.011Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-10-30T16:17:37.147

Modified: 2026-10-30T19:37:07.073

Link: CVE-2026-105456

cve-icon Redhat

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