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CVE-2026-44231

RT: Privilege escalation and information disclosure via REST 2.0 user collection endpoint

9.1 CriticalFix available

RT is an open source, enterprise-grade issue and ticket tracking system. Versions prior to 5.0.10, 6.0.0 and above, prior to 6.0.3 contain an information disclosure and privilege escalation vulnerability in the REST 2.0 API. A privileged (non-administrative) user can obtain authentication credentials belonging to other users — including users with administrative privileges — and use those credentials to read data as those users via RT's feed endpoints. The same request that exposes the credentials also rotates them, invalidating previously-distributed feed URLs across the instance. This issue has been fixed in versions 5.0.10 and 6.0.3.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
Low
User interaction
None

What an attacker can affect

Confidentiality
High
Integrity
Low
Availability
Low

Exploit likelihood

0.25%Up 0.2 points since Jun 12, 2026
90%50%10%1%

What each source reports

CVE List Score used 9.1

RT: Privilege escalation and information disclosure via REST 2.0 user collection endpoint

RT is an open source, enterprise-grade issue and ticket tracking system. Versions prior to 5.0.10, 6.0.0 and above, prior to 6.0.3 contain an information disclosure and privilege escalation vulnerability in the REST 2.0 API. A privileged (non-administrative) user can obtain authentication credentials belonging to other users — including users with administrative privileges — and use those credentials to read data as those users via RT's feed endpoints. The same request that exposes the credentials also rotates them, invalidating previously-distributed feed URLs across the instance. This issue has been fixed in versions 5.0.10 and 6.0.3.

Record
CVE-2026-44231
CVSS 3.1
9.1 CriticalCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:L
Weakness
CWE-200, CWE-269, CWE-863
Updated
2026-11-02
EUVDEUVD-2026-46079 9.1

RT is an open source, enterprise-grade issue and ticket tracking system. Versions prior to 5.0.10, 6.0.0 and above, prior to 6.0.3 contain an information disclosure and privilege escalation vulnerability in the REST 2.0 API. A privileged (non-administrative) user can obtain authentication credentials belonging to other users — including users with administrative privileges — and use those credentials to read data as those users via RT's feed endpoints. The same request that exposes the credentials also rotates them, invalidating previously-distributed feed URLs across the instance. This issue has been fixed in versions 5.0.10 and 6.0.3.

Record
EUVD-2026-46079
CVSS 3.1
9.1 CriticalCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:L
Updated
2026-11-02
NVD 9.1

RT is an open source, enterprise-grade issue and ticket tracking system. Versions prior to 5.0.10, 6.0.0 and above, prior to 6.0.3 contain an information disclosure and privilege escalation vulnerability in the REST 2.0 API. A privileged (non-administrative) user can obtain authentication credentials belonging to other users — including users with administrative privileges — and use those credentials to read data as those users via RT's feed endpoints. The same request that exposes the credentials also rotates them, invalidating previously-distributed feed URLs across the instance. This issue has been fixed in versions 5.0.10 and 6.0.3.

Record
CVE-2026-44231
CVSS 3.1
9.1 CriticalCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:L
Weakness
CWE-200, CWE-269, CWE-863
Updated
2026-11-02
OSV 9.1

RT: Privilege escalation and information disclosure via REST 2.0 user collection endpoint

RT is an open source, enterprise-grade issue and ticket tracking system. Versions prior to 5.0.10, 6.0.0 and above, prior to 6.0.3 contain an information disclosure and privilege escalation vulnerability in the REST 2.0 API. A privileged (non-administrative) user can obtain authentication credentials belonging to other users — including users with administrative privileges — and use those credentials to read data as those users via RT's feed endpoints. The same request that exposes the credentials also rotates them, invalidating previously-distributed feed URLs across the instance. This issue has been fixed in versions 5.0.10 and 6.0.3.

Record
CVE-2026-44231
CVSS 3.1
9.1 CriticalCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:L
Weakness
CWE-200, CWE-269, CWE-863
Updated
2026-11-02
OSVDEBIAN-CVE-2026-44231 9.1

RT is an open source, enterprise-grade issue and ticket tracking system. Versions prior to 5.0.10, 6.0.0 and above, prior to 6.0.3 contain an information disclosure and privilege escalation vulnerability in the REST 2.0 API. A privileged (non-administrative) user can obtain authentication credentials belonging to other users — including users with administrative privileges — and use those credentials to read data as those users via RT's feed endpoints. The same request that exposes the credentials also rotates them, invalidating previously-distributed feed URLs across the instance. This issue has been fixed in versions 5.0.10 and 6.0.3.

Record
DEBIAN-CVE-2026-44231
CVSS 3.1
9.1 CriticalCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:L
Updated
2026-11-02
OSVUBUNTU-CVE-2026-44231 9.1

RT is an open source, enterprise-grade issue and ticket tracking system. Versions prior to 5.0.10, 6.0.0 and above, prior to 6.0.3 contain an information disclosure and privilege escalation vulnerability in the REST 2.0 API. A privileged (non-administrative) user can obtain authentication credentials belonging to other users — including users with administrative privileges — and use those credentials to read data as those users via RT's feed endpoints. The same request that exposes the credentials also rotates them, invalidating previously-distributed feed URLs across the instance. This issue has been fixed in versions 5.0.10 and 6.0.3.

Record
UBUNTU-CVE-2026-44231
CVSS 3.1
9.1 CriticalCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:L
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
request-tracker4
Debian:12
before 4.4.6+dfsg-1.1+deb12u4, plus listed versions
4.4.6+dfsg-1.14.4.6+dfsg-1.1+deb12u14.4.6+dfsg-1.1+deb12u24.4.6+dfsg-1.1+deb12u3
4.4.6+dfsg-1.1+deb12u4
request-tracker5
Debian:12
before 5.0.3+dfsg-3~deb12u6, plus listed versions
5.0.3+dfsg-25.0.3+dfsg-3~deb12u15.0.3+dfsg-3~deb12u25.0.3+dfsg-3~deb12u35.0.3+dfsg-3~deb12u45.0.3+dfsg-3~deb12u5
5.0.3+dfsg-3~deb12u6
request-tracker5
Debian:13
before 5.0.7+dfsg-4+deb13u3, plus listed versions
5.0.7+dfsg-45.0.7+dfsg-4+deb13u15.0.7+dfsg-4+deb13u2
5.0.7+dfsg-4+deb13u3
request-tracker5
Debian:14
before 5.0.10+dfsg-1, plus listed versions
5.0.7+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
5.0.10+dfsg-1
request-tracker4
Ubuntu:16.04:LTS
All versions, plus listed versions
4.2.11-24.2.12-34.2.12-44.2.12-5
None known
request-tracker4
Ubuntu:Pro:18.04:LTS
All versions, plus listed versions
4.4.1-54.4.2-14.4.2-24.4.2-2ubuntu0.1~esm1
None known
request-tracker4
Ubuntu:20.04:LTS
All versions, plus listed versions
4.4.3-24.4.3-2+deb10u3build0.20.04.1
None known
request-tracker4
Ubuntu:22.04:LTS
All versions, plus listed versions
4.4.4+dfsg-2ubuntu14.4.4+dfsg-2ubuntu1.22.04.1
None known
request-tracker5
Ubuntu:Pro:22.04:LTS
before 5.0.1+dfsg-1ubuntu1+esm2, plus listed versions
5.0.1+dfsg-1ubuntu15.0.1+dfsg-1ubuntu1+esm1
5.0.1+dfsg-1ubuntu1+esm2
request-tracker4
Ubuntu:24.04:LTS
All versions, plus listed versions
4.4.4+dfsg-2ubuntu14.4.4+dfsg-2ubuntu24.4.7+dfsg-1
None known
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Affected packages
PackageAffectedFixed
request-tracker5
Ubuntu:Pro:24.04:LTS
before 5.0.5+dfsg-2ubuntu0.1~esm2, plus listed versions
5.0.1+dfsg-1ubuntu15.0.5+dfsg-25.0.5+dfsg-2ubuntu0.1~esm1
5.0.5+dfsg-2ubuntu0.1~esm2
request-tracker4
Ubuntu:25.10
All versions, plus listed versions
4.4.7+dfsg-4syncable1
None known
request-tracker5
Ubuntu:25.10
All versions, plus listed versions
5.0.7+dfsg-25.0.7+dfsg-35.0.7+dfsg-4
None known
request-tracker4
Ubuntu:26.04:LTS
All versions, plus listed versions
4.4.7+dfsg-4syncable1
None known
request-tracker5
Ubuntu:Pro:26.04:LTS
before 5.0.7+dfsg-6ubuntu0.1~esm1, plus listed versions
5.0.7+dfsg-45.0.7+dfsg-6
5.0.7+dfsg-6ubuntu0.1~esm1

History

History
RecordedChangedSources
first indexedCVE List, EUVD, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2026-44231 is a critical vulnerability (CVSS 9.1) in Bestpractical Rt, published May 21, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.25%, the 16th percentile. Fixed in request-tracker4 4.4.6+dfsg-1.1+deb12u4.

References

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