MEDIUMCVSS v4 5.3Vulnerability

CVE-2026-105456

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

Properties

Cvss score
5.3
First seen
2026-10-30T18:32:37+00:00
Last seen
2026-10-30T18:32:37+00:00
Euvd assigner
CERT-PL
Retrieved at
2026-10-30T20:09:45+00:00
Src batch id
euvd-20261030T193401Z-78899a
Source url
https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-114128
Score
5.3
Euvd base score version
4.0
Fetched at
2026-10-30T19:34:21+00:00
Euvd vendor
Best Practical Solutions
Cvss 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
First seen by Signal
2026-10-30T19:34:21+00:00
Euvd base 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Content hash
11e50d940a35444aabf7cfe7b3721433c1d70c7c4569d3bb3dc74d90ca4f3b48
Published at
2026-10-30T16:17:37.147
Last modified
2026-10-30T19:37:07.073
Euvd updated
2026-10-30T18:32:37+00:00
Euvd epss pct
0

Related Entities (1)

Explore deeper with Ninja Signal's threat intelligence graph

CVE-2026-105456 (CVSS v4 5.3) — Ninja Signal Threat Intelligence | Ninja Signal