CVE-2021-41119: Wire Wire-Server

High severity, CVSS 7.5. EPSS: 1.4% chance of exploitation in the next 30 days.

Wire-server is the system server for the wire back-end services. Releases prior to v2022-03-01 are subject to a denial of service attack via a crafted object causing a hash collision. This collision causes the server to spend at least quadratic time parsing it which can lead to a denial of service for a heavily used server. The issue has been fixed in wire-server 2022-03-01 and is already deployed on all Wire managed services. On premise instances of wire-server need to be updated to 2022-03-01, so that their backends are no longer affected. There are no known workarounds for this issue.

Affected products

• Wire Wire-Server: before 2022-03-01 (fixed in 2022-03-01)

Published 2022-04-13. Last modified 2026-06-17.