CVE-2018-19443
Session Fixation in Tryton
The client in Tryton 5.x before 5.0.1 tries to make a connection to the bus in cleartext instead of encrypted under certain circumstances in bus.py and jsonrpc.py. This connection attempt fails, but it contains in the header the current session of the user. This session could then be stolen by a man-in-the-middle.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- High
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- None
- Availability
- None
Exploit likelihood
What each source reports
NVD Score used
The client in Tryton 5.x before 5.0.1 tries to make a connection to the bus in cleartext instead of encrypted under certain circumstances in bus.py and jsonrpc.py. This connection attempt fails, but it contains in the header the current session of the user. This session could then be stolen by a man-in-the-middle.
- Record
CVE-2018-19443- CVSS 3.0
- 5.9 Medium
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N - CVSS 2.0
- 4.3 Medium
AV:N/AC:M/Au:N/C:P/I:N/A:N - Weakness
- CWE-384
- Updated
- 2026-11-02
CVE List No score
The client in Tryton 5.x before 5.0.1 tries to make a connection to the bus in cleartext instead of encrypted under certain circumstances in bus.py and jsonrpc.py. This connection attempt fails, but it contains in the header the current session of the user. This session could then be stolen by a man-in-the-middle.
- Record
CVE-2018-19443- Updated
- 2026-11-02
EUVDEUVD-2018-0142 No score
The client in Tryton 5.x before 5.0.1 tries to make a connection to the bus in cleartext instead of encrypted under certain circumstances in bus.py and jsonrpc.py. This connection attempt fails, but it contains in the header the current session of the user. This session could then be stolen by a man-in-the-middle.
- Record
EUVD-2018-0142- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-32w7-9whp-cjp9
Session Fixation in Tryton
The client in Tryton 5.x before 5.0.1 tries to make a connection to the bus in cleartext instead of encrypted under certain circumstances in bus.py and jsonrpc.py. This connection attempt fails, but it contains in the header the current session of the user. This session could then be stolen by a man-in-the-middle.
- Record
GHSA-32w7-9whp-cjp9- CVSS 4.0
- 8.2 High
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N - CVSS 3.0
- 5.9 Medium
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N - Weakness
- CWE-384
- Updated
- 2026-11-02
OSVGHSA-32w7-9whp-cjp9
Session Fixation in Tryton
The client in Tryton 5.x before 5.0.1 tries to make a connection to the bus in cleartext instead of encrypted under certain circumstances in bus.py and jsonrpc.py. This connection attempt fails, but it contains in the header the current session of the user. This session could then be stolen by a man-in-the-middle.
- Record
GHSA-32w7-9whp-cjp9- CVSS 4.0
- 8.2 High
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N - CVSS 3.0
- 5.9 Medium
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N - Weakness
- CWE-384
- Updated
- 2026-11-02
OSVUBUNTU-CVE-2018-19443
The client in Tryton 5.x before 5.0.1 tries to make a connection to the bus in cleartext instead of encrypted under certain circumstances in bus.py and jsonrpc.py. This connection attempt fails, but it contains in the header the current session of the user. This session could then be stolen by a man-in-the-middle.
- Record
UBUNTU-CVE-2018-19443- CVSS 3.0
- 5.9 Medium
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N - Updated
- 2026-11-02
OSVPYSEC-2018-77 No score
The client in Tryton 5.x before 5.0.1 tries to make a connection to the bus in cleartext instead of encrypted under certain circumstances in bus.py and jsonrpc.py. This connection attempt fails, but it contains in the header the current session of the user. This session could then be stolen by a man-in-the-middle.
- Record
PYSEC-2018-77- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
trytonPyPI |
5.0.0 to 5.0.0 | 5.0.1 |
trytonPyPI |
5.0.0 up to 5.0.1 | 5.0.1 |
tryton-clientUbuntu:16.04:LTS |
All versions, plus listed versions 3.6.2-13.6.3-13.8.2-13.8.3-13.8.4-1 |
None known |
tryton-clientUbuntu:18.04:LTS |
All versions, plus listed versions 4.4.1-24.4.2-14.6.0-14.6.1-14.6.2-14.6.5-1 |
None known |
tryton-clientUbuntu:20.04:LTS |
All versions, plus listed versions 5.0.12-15.0.15-15.0.17-1 |
None known |
tryton-clientUbuntu:22.04:LTS |
All versions, plus listed versions 5.0.33-16.0.8-16.0.8-26.0.10-1 |
None known |
tryton-clientUbuntu:24.04:LTS |
All versions, plus listed versions 6.0.28-16.0.29-16.0.34-1 |
None known |
tryton-clientUbuntu:25.10 |
All versions, plus listed versions 7.0.20-17.0.24-1 |
None known |
tryton-clientUbuntu:26.10 |
All versions, plus listed versions 7.0.31-17.0.35-17.0.41-1 |
None known |
tryton-clientUbuntu:26.04:LTS |
All versions, plus listed versions 7.0.24-17.0.27-27.0.31-1 |
None known |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2018-19443 is a medium vulnerability (CVSS 5.9) in Tryton, published November 22, 2018. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.07%, the 65th percentile. Fixed in tryton 5.0.1.
References
discuss.tryton.org/t/security-release-for-issue7792/830
bugs.tryton.org/issue7792
nvd.nist.gov/vuln/detail/CVE-2018-19443
github.com/pypa/advisory-database/tree/main/vulns/tryton/PYSEC-2018-77.yaml
ubuntu.com/security/CVE-2018-19443
cve.org/CVERecord?id=CVE-2018-19443