Description
RT's automatic link creation for URLs in HTML ticket content does
not HTML-escape the URL it places in the link. A URL crafted to
break out of the link's address can add a script that runs when the
ticket history is displayed, with no further action by the viewer.
Anyone who can add HTML content to a ticket can plant it. That
includes an unauthenticated sender of HTML email to any queue that
grants CreateTicket or ReplyToTicket to Everyone, which is routine
for a queue that accepts mail from the public. The script runs in
the session of any user who views the ticket, and can act in RT
with that user's authority.


This issue was fixed in versionĀ 5.0.11 and 6.0.4
Published: 2026-10-30
Score: 5.3 Medium
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

No analysis available yet.

Remediation

Vendor Workaround

Set @Active_MakeClicky to an empty list in RT_SiteConfig.pm and restart the web server. This disables automatic link creation for URLs in ticket content.

Tracking

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Advisories

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History

Fri, 30 Oct 2026 15:45:00 +0000

Type Values Removed Values Added
Description RT's automatic link creation for URLs in HTML ticket content does not HTML-escape the URL it places in the link. A URL crafted to break out of the link's address can add a script that runs when the ticket history is displayed, with no further action by the viewer. Anyone who can add HTML content to a ticket can plant it. That includes an unauthenticated sender of HTML email to any queue that grants CreateTicket or ReplyToTicket to Everyone, which is routine for a queue that accepts mail from the public. The script runs in the session of any user who views the ticket, 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 crafted URLs in HTML ticket content in Request Tracker
First Time appeared Best Practical Solutions
Best Practical Solutions request Tracker
Weaknesses CWE-79
CPEs cpe:2.3:a:best_practical_solutions:request_tracker:*:*:*:*:*:*:*:*
Vendors & Products Best Practical Solutions
Best Practical Solutions request Tracker
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'}


Subscriptions

Best Practical Solutions Request Tracker
cve-icon MITRE

Status: PUBLISHED

Assigner: CERT-PL

Published:

Updated: 2026-10-30T15:34:57.607Z

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

Link: CVE-2026-105454

cve-icon Vulnrichment

No data.

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses
  • CWE-79

    Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')