CVE-2026-105456
Published:October 30, 2026
Updated:November 04, 2026
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 version 5.0.11 and 6.0.4
Affected Packages
https://github.com/bestpractical/rtir.git (GITHUB):
Affected version(s) =3.3.0 <5.0.11 || >=4.0.0rc1 <5.0.11 || >=5.0.0beta1 <5.0.11Fix Suggestion:
Update to version 5.0.11https://github.com/bestpractical/rtir.git (GITHUB):
Affected version(s) >=6.0.1 <6.0.4Fix Suggestion:
Update to version 6.0.4Related Resources (5)
Do you need more information?
Contact UsCVSS v4
Base Score:
5.3
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
PASSIVE
Vulnerable System Confidentiality
LOW
Vulnerable System Integrity
LOW
Vulnerable System Availability
NONE
Subsequent System Confidentiality
LOW
Subsequent System Integrity
LOW
Subsequent System Availability
NONE
CVSS v3
Base Score:
6.1
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
Weakness Type (CWE)
Improper Neutralization of Input During Web Page Generation
EPSS
Base Score:
0.45