CVE-2026-105454
Stored XSS via crafted URLs in HTML ticket content in Request Tracker
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 version 5.0.11 and 6.0.4
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- Passive
What an attacker can affect
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
Stored XSS via crafted URLs in HTML ticket content in Request Tracker
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 version 5.0.11 and 6.0.4
- Record
CVE-2026-105454- CVSS 4.0
- 5.3 Medium
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 - Weakness
- CWE-79
- Updated
- 2026-11-02
EUVDEUVD-2026-114131
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 version 5.0.11 and 6.0.4
- Record
EUVD-2026-114131- CVSS 4.0
- 5.3 Medium
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 - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-356j-wm99-9qqc
RT's automatic link creation for URLs in HTML ticket content does not HTML-escape the URL...
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 version 5.0.11 and 6.0.4
- Record
GHSA-356j-wm99-9qqc- CVSS 4.0
- 5.3 Medium
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 - Weakness
- CWE-79
- Updated
- 2026-11-02
NVD
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 version 5.0.11 and 6.0.4
- Record
CVE-2026-105454- CVSS 4.0
- 5.3 Medium
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 - Weakness
- CWE-79
- Updated
- 2026-11-02
OSV
Stored XSS via crafted URLs in HTML ticket content in Request Tracker
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 version 5.0.11 and 6.0.4
- Record
CVE-2026-105454- CVSS 4.0
- 5.3 Medium
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 - Weakness
- CWE-79
- Updated
- 2026-11-02
OSVDEBIAN-CVE-2026-105454
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 version 5.0.11 and 6.0.4
- Record
DEBIAN-CVE-2026-105454- CVSS 4.0
- 5.3 Medium
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 - Updated
- 2026-11-02
OSVUBUNTU-CVE-2026-105454
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 version 5.0.11 and 6.0.4
- Record
UBUNTU-CVE-2026-105454- CVSS 4.0
- 5.3 Medium
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 - Updated
- 2026-11-05
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
request-tracker5Debian:12 |
All versions, plus listed versions 5.0.10+dfsg-15.0.10+dfsg-25.0.10+dfsg-35.0.3+dfsg-25.0.3+dfsg-3 Show 20 moreShow less5.0.3+dfsg-3~deb12u15.0.3+dfsg-3~deb12u25.0.3+dfsg-3~deb12u35.0.3+dfsg-3~deb12u45.0.3+dfsg-3~deb12u55.0.3+dfsg-3~deb12u65.0.4+dfsg-15.0.4+dfsg-25.0.5+dfsg-15.0.5+dfsg-25.0.7+dfsg-15.0.7+dfsg-25.0.7+dfsg-35.0.7+dfsg-45.0.7+dfsg-55.0.7+dfsg-65.0.9+dfsg-15.0.9+dfsg-25.0.9+dfsg-35.0.9+dfsg-4 |
None known |
request-tracker5Debian:13 |
All versions, plus listed versions 5.0.10+dfsg-15.0.10+dfsg-25.0.10+dfsg-35.0.7+dfsg-45.0.7+dfsg-4+deb13u1 Show 8 moreShow less5.0.7+dfsg-4+deb13u25.0.7+dfsg-4+deb13u35.0.7+dfsg-55.0.7+dfsg-65.0.9+dfsg-15.0.9+dfsg-25.0.9+dfsg-35.0.9+dfsg-4 |
None known |
request-tracker5Debian:14 |
All versions, plus listed versions 5.0.10+dfsg-15.0.10+dfsg-25.0.10+dfsg-35.0.7+dfsg-45.0.7+dfsg-5 Show 5 moreShow less5.0.7+dfsg-65.0.9+dfsg-15.0.9+dfsg-25.0.9+dfsg-35.0.9+dfsg-4 |
None known |
request-tracker5Ubuntu:Pro:22.04:LTS |
All versions, plus listed versions 5.0.1+dfsg-1ubuntu15.0.1+dfsg-1ubuntu1+esm15.0.1+dfsg-1ubuntu1+esm2 |
None known |
request-tracker5Ubuntu:Pro:24.04:LTS |
All versions, plus listed versions 5.0.1+dfsg-1ubuntu15.0.5+dfsg-25.0.5+dfsg-2ubuntu0.1~esm15.0.5+dfsg-2ubuntu0.1~esm2 |
None known |
request-tracker5Ubuntu:26.10 |
All versions, plus listed versions 5.0.7+dfsg-65.0.10+dfsg-15.0.10+dfsg-3 |
None known |
request-tracker5Ubuntu:Pro:26.04:LTS |
All versions, plus listed versions 5.0.7+dfsg-45.0.7+dfsg-65.0.7+dfsg-6ubuntu0.1~esm1 |
None known |
History
| Recorded | Changed | Sources |
|---|---|---|
| affected, aliases, facts, references | OSV | |
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-105454 is a medium vulnerability (CVSS 5.3) in Best Practical Solutions Request Tracker, published October 30, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.44%, the 38th percentile. No source names a fixed version.