CVE-2024-52805
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.
INFO
Published Date :
Dec. 3, 2024, 5:15 p.m.
Last Modified :
Aug. 26, 2025, 3:06 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | [email protected] | ||||
| CVSS 4.0 | HIGH | [email protected] |
Solution
- Update the affected matrix-synapse package.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2024-52805.
| URL | Resource |
|---|---|
| https://github.com/element-hq/synapse/security/advisories/GHSA-rfq8-j7rh-8hf2 | Vendor Advisory |
| https://github.com/twisted/twisted/issues/4688#issuecomment-1167705518 | Issue Tracking |
| https://github.com/twisted/twisted/issues/4688#issuecomment-2385711609 | Issue Tracking |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2024-52805 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2024-52805
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2024-52805 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2024-52805 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Aug. 26, 2025
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Added CPE Configuration OR *cpe:2.3:a:matrix:synapse:*:*:*:*:*:*:*:* versions up to (excluding) 1.120.1 Added Reference Type GitHub, Inc.: https://github.com/element-hq/synapse/security/advisories/GHSA-rfq8-j7rh-8hf2 Types: Vendor Advisory Added Reference Type GitHub, Inc.: https://github.com/twisted/twisted/issues/4688#issuecomment-1167705518 Types: Issue Tracking Added Reference Type GitHub, Inc.: https://github.com/twisted/twisted/issues/4688#issuecomment-2385711609 Types: Issue Tracking -
New CVE Received by [email protected]
Dec. 03, 2024
Action Type Old Value New Value Added 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. Added CVSS V4.0 AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Added CWE CWE-770 Added Reference https://github.com/element-hq/synapse/security/advisories/GHSA-rfq8-j7rh-8hf2 Added Reference https://github.com/twisted/twisted/issues/4688#issuecomment-1167705518 Added Reference https://github.com/twisted/twisted/issues/4688#issuecomment-2385711609