CVE-2026-105455

MediumCVSS 5.3

Published: 30/10/2026(UTC)Updated: 30/10/2026(UTC)Translated: 30/10/2026(UTC)NVD NIST

Exploitation Probability (EPSS)

Low risk

0.41%

35th percentile - higher than 35% of all known CVEs

Summary

RTIR's ticket creation forms show the subject of the related ticket when splitting a ticket or creating an incident from a report, rendering that subject without HTML escaping. A ticket subject containing script runs it when a user opens either form. RTIR grants everyone the right to create Incident Reports by default, so an unauthenticated sender of an emailed report can set that subject, and the script runs in the session of the handler who creates or splits the incident. The issue was fixed in version 6.0.4; RTIR 5.0 is not affected.

Risk Assessment

An unauthenticated report sender can set a malicious subject that executes script in the session of the handler creating or splitting an incident, acting with that user's authority in RT.

Recommendation

Upgrade RTIR to version 6.0.4 or later (RTIR 5.0 is not affected) and consider restricting Incident Report creation by unauthenticated senders.

Other vulnerabilities in RTIR

CVE-2026-105456Medium
RTIR extends RT's HTML scrubber to allow an internal link placeholder and lets through any link containing that placeholder, including links using the executable javascript: scheme. The change applies to the whole RT instance once RTIR is installed, not only RTIR's own queues. Anyone who can add HTML content to a ticket, including an unauthenticated sender of HTML email to the Incident Reports queue (open to everyone by default), can store such a link, and the script runs in the session of the user who clicks it. The issue was fixed in versions 5.0.11 and 6.0.4.

Original NVD description (English source)

RTIR's ticket creation forms show the subject of the related ticket when splitting a ticket or creating an incident from a report, and they render that subject without HTML escaping. A ticket subject containing script runs it when a user opens either form. RTIR grants everyone the right to create Incident Reports by default, so an unauthenticated sender of an emailed report can set that subject. The script then runs in the session of the incident handler who creates an incident from the report or splits it, and can act in RT with that user's authority. The issue was fixed in version 6.0.4. RTIR 5.0 is not affected.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS