Moderate severityOSV Advisory· Published Apr 19, 2019· Updated Aug 4, 2024
CVE-2019-11340
CVE-2019-11340
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 user@bad.example.net@good.example.com returns the user@bad.example.net substring.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
matrix-sydentPyPI | < 1.0.2 | 1.0.2 |
Affected products
2- Range: v1.0.0, v1.0.1
Patches
Vulnerability mechanics
Generated on May 9, 2026. Inputs: CWE entries + fix-commit diffs from this CVE's patches. Citations validated against bundle.
References
7- github.com/advisories/GHSA-q9h8-gpw5-c95cghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2019-11340ghsaADVISORY
- github.com/matrix-org/sydent/commit/4e1cfff53429c49c87d5c457a18ed435520044fcghsax_refsource_MISCWEB
- github.com/matrix-org/sydent/compare/7c002cd...09278fbghsax_refsource_MISCWEB
- matrix.org/blog/2019/04/18/security-update-sydent-1-0-2ghsaWEB
- matrix.org/blog/2019/04/18/security-update-sydent-1-0-2/mitrex_refsource_MISC
- twitter.com/matrixdotorg/status/1118934335963500545ghsax_refsource_MISCWEB
News mentions
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