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

TRUNG BÌNH 5.3CVE-2024-52815 · GHSA-f3r3-h2mq-hx2h · PYSEC-2026-1611 · Công bố 03/12/2024 · cập nhật 17/06/2026

Tóm tắt nhanh

CVE-2024-52815 là lỗ hổng mức TRUNG BÌNH (CVSS 5.3) ảnh hưởng matrix-synapse, synapse (matrix).
Xác suất bị khai thác trong 30 ngày tới (EPSS): 0.57%, cao hơn 47.2% các lỗ hổng khác.
Cách xử lý: cập nhật lên 1.120.1 hoặc mới hơn.

Gói / sản phẩm	Phiên bản bị ảnh hưởng	Phiên bản đã vá
matrix-synapse PyPI	`< 1.120.1`	`1.120.1`
synapse matrix	`< 1.120.1`	`1.120.1`

Mô tả

Impact

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.

Patches

Synapse 1.120.1 rejects such invalid invites received over federation and restores the ability to sync for affected users.

Workarounds

Server administrators can disable federation from untrusted servers.

For more information

If you have any questions or comments about this advisory, please email us at security at element.io.

Mô tả của NVD

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.