CVE-2024-52815

CVSS 8.7v4.0pub. 2024-12-03upd. 2025-08-26

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.

CVSS Vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Matrix Synapse
APP
Matrix
< 1.120.1

🔵

CHECK WITH VENDOR

No clear patch data available. Check vendor references.

CWE

CWE-20

NVD-CWE-noinfo

References

github.com/element-hq/synapse/security/advisories/GHSA-…

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