Session Fixation in Tryton

published 2018-11-22 7y ago modified 2026-06-17 4mo ago also GHSA-32w7-9whp-cjp9 , PYSEC-2018-77 , EUVD-2018-0142

cvss: 5.9; version 3.0, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 1.1%; EPSS 1.1% chance of exploitation in 30 days, percentile 65%
public exploits: 0; none known

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.

Patch / fix

fixed in 1

pypi tryton 5.0.1

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Exploit prediction

1.07% chance of exploitation in the next 30 days, higher than 65% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by	version	score	vector
NVD	3.0	5.9	CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
NVD	2.0	4.3	AV:N/AC:M/Au:N/C:P/I:N/A:N
GitHub	3.0	5.9	CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected packages

ecosystem	package	affected	fixed in
pypi	tryton	>=5.0.0, <5.0.1	5.0.1

Classification

Weakness

CWE-384 Session Fixation

References

discuss.tryton.org /t/security-release-for-issue7792/830
web, vendor-advisory
bugs.tryton.org /issue7792
web, issue-tracking, third-party-advisory
nvd.nist.gov /vuln/detail/CVE-2018-19443
advisory
github.com /pypa/advisory-database/tree/main/vulns/tryton/PYSEC-2018-77.yaml
web
github.com /advisories/GHSA-32w7-9whp-cjp9
advisory

Sources

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