External Control of Critical State Data Affecting synapse package, versions <1.135.1-r0
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published4 Dec 2025
- disclosed2 Oct 2025
Introduced: 2 Oct 2025
CVE-2025-49090 (opens in a new tab)How to fix?
Upgrade Alpine:3.23 synapse to version 1.135.1-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:3.23 relevant fixed versions and status.
The Matrix specification before 1.16 (i.e., with a room version before 12 and State Resolution before 2.1) has deficient state resolution.