CVE-2021-29432

Malicious users could control the content of invitation emails

Description

Sydent is a reference matrix identity server. 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. This issue has been fixed in 4469d1d.

Category

5.3
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.25%
Third-Party Advisory github.com Third-Party Advisory github.com Third-Party Advisory github.com Third-Party Advisory pypi.org
Affected: matrix-org sydent
Published at:
Updated at:

References

Link Tags
https://pypi.org/project/matrix-sydent/ third party advisory product
https://github.com/matrix-org/sydent/releases/tag/v2.3.0 third party advisory release notes
https://github.com/matrix-org/sydent/security/advisories/GHSA-mh74-4m5g-fcjx third party advisory patch
https://github.com/matrix-org/sydent/commit/4469d1d42b2b1612b70638224c07e19623039c42 third party advisory patch

Frequently Asked Questions

What is the severity of CVE-2021-29432?
CVE-2021-29432 has been scored as a medium severity vulnerability.
How to fix CVE-2021-29432?
To fix CVE-2021-29432, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-29432 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-29432 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-29432?
CVE-2021-29432 affects matrix-org sydent.
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