CVE-2024-52805
High
Description
Synapse is an open-source Matrix homeserver. In Synapse before 1.120.1, multipart/form-data requests can in certain configurations transiently increase memory consumption beyond expected levels while processing the request, which can be used to amplify denial of service attacks. Synapse 1.120.1 resolves the issue by denying requests with unsupported multipart/form-data content type.
SeverityHigh
CVSS7.5
Exploit probability—
ProductMatrix Synapse
PublishedDec 3, 2024
First seenDec 3, 2024
Weakness typeCWE-770Allocation of resources without limits
How to fix
Update
- matrix synapse1.120.1 or later
- matrix-synapse1.120.1 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| matrix synapse | v < 1.120.1 | 1.120.1 |
| matrix-synapsePyPI | v < 1.120.1 | 1.120.1 |
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