CVE-2021-29432
MEDIUM5.3EPSS 0.25%Malicious users could abuse Sydent to control the content of invitation emails
Published: 4/19/2021Modified: 3/13/2026
Description
### Impact A malicious user could abuse Sydent to send out arbitrary emails from the Sydent email address. This could be used to construct plausible phishing emails, for example. ### Patches Fixed in 4469d1d, 6b405a8, 65a6e91. Note that these patches include changes to the *default* email templates. If these templates have been locally modified, they must also be updated. ### For more information If you have any questions or comments about this advisory, email us at [email protected].
Affected packages (2)
- PyPI/matrix-sydentfrom 0, < 2.3.0
- PyPI/matrix-sydentfrom 0, < 4469d1d42b2b1612b70638224c07e19623039c42 | from 0, < 2.3.0
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 4.0 | — | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N |
| osv | CVSS 3.1 | MEDIUM5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N |
References (7)
- ADVISORYhttps://nvd.nist.gov/vuln/detail/CVE-2021-29432
- PATCHhttps://pypi.org/project/matrix-sydent/
- WEBhttps://github.com/matrix-org/sydent/commit/4469d1d42b2b1612b70638224c07e19623039c42
- WEBhttps://github.com/matrix-org/sydent/releases/tag/v2.3.0
- WEBhttps://github.com/matrix-org/sydent/security/advisories/GHSA-mh74-4m5g-fcjx
- WEBhttps://github.com/pypa/advisory-database/tree/main/vulns/matrix-sydent/PYSEC-2021-23.yaml
- WEBhttps://pypi.org/project/matrix-sydent