CVE-2024-52815

Synapse allows a a malformed invite to break the invitee's `/sync`

Description

Synapse is an open-source Matrix homeserver. Synapse versions before 1.120.1 fail to properly validate invites received over federation. This vulnerability allows a malicious server to send a specially crafted invite that disrupts the invited user's /sync functionality. Synapse 1.120.1 rejects such invalid invites received over federation and restores the ability to sync for affected users.

Category

8.7
CVSS
Severity: High
CVSS 4.0 •
EPSS 0.05%
Affected: element-hq synapse
Published at:
Updated at:

References

Link Tags
https://github.com/element-hq/synapse/security/advisories/GHSA-f3r3-h2mq-hx2h

Frequently Asked Questions

What is the severity of CVE-2024-52815?
CVE-2024-52815 has been scored as a high severity vulnerability.
How to fix CVE-2024-52815?
To fix CVE-2024-52815, 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-2024-52815 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2024-52815 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-2024-52815?
CVE-2024-52815 affects element-hq synapse.
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