Description
util/emailutils.py in Matrix Sydent before 1.0.2 mishandles registration restrictions that are based on e-mail domain, if the allowed_local_3pids option is enabled. This occurs because of potentially unwanted behavior in Python, in which an email.utils.parseaddr call on [email protected]@good.example.com returns the [email protected] substring.
References (4)
Core 4
Core References
Third Party Advisory x_refsource_misc
https://twitter.com/matrixdotorg/status/1118934335963500545
Release Notes, Vendor Advisory x_refsource_misc
https://matrix.org/blog/2019/04/18/security-update-sydent-1-0-2/
Patch, Third Party Advisory x_refsource_misc
https://github.com/matrix-org/sydent/commit/4e1cfff53429c49c87d5c457a18ed435520044fc
Patch, Third Party Advisory x_refsource_misc
https://github.com/matrix-org/sydent/compare/7c002cd...09278fb
Scores
CVSS v3
5.9
EPSS
0.0066
EPSS Percentile
71.3%
Attack Vector
NETWORK
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
Details
CWE
CWE-20
Status
published
Products (2)
matrix/sydent
< 1.0.2
pypi/matrix-sydent
0 - 1.0.2PyPI
Published
Apr 19, 2019
Tracked Since
Feb 18, 2026