CVE-2024-52815 Affecting synapse package, versions <1.120.2-r0


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.09% (27th percentile)

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  • Snyk IDSNYK-ALPINE322-SYNAPSE-10282963
  • published31 May 2025
  • disclosed3 Dec 2024

Introduced: 3 Dec 2024

CVE-2024-52815  (opens in a new tab)

How to fix?

Upgrade Alpine:3.22 synapse to version 1.120.2-r0 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream synapse package and not the synapse package as distributed by Alpine. See How to fix? for Alpine:3.22 relevant fixed versions and status.

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 Base Scores

version 3.1