Improper Input Validation Affecting matrix-synapse package, versions [,1.127.1)
Threat Intelligence
Snyk has reported that there have been attempts or successful attacks targeting this vulnerability.
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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- published28 Mar 2025
- disclosed27 Mar 2025
- creditUnknown
Introduced: 27 Mar 2025
CVE-2025-30355 (opens in a new tab)How to fix?
Upgrade matrix-synapse to version 1.127.1 or higher.
Overview
matrix-synapse is an ecosystem for open federated Instant Messaging and VoIP.
Affected versions of this package are vulnerable to Improper Input Validation. A malicious server can disrupt the normal operation and prevent the application from federating with other servers by crafting events that exploit this flaw.
Note:
This is only exploitable in environments where federation is enabled.