Technology · Element
Element Synapse vulnerabilities
Updated . Rebuilt every hour.
Junglewise Threat Intelligence has tracked 4 vulnerabilities in Element Synapse: 0 in the last 7 days and 0 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-45078, was published on 28 May 2026.
- Last 7 days
- 0
- Last 90 days
- 0
- Critical, all time
- 0
- Exploited in the wild
- 0
About Element Synapse
Open-source homeserver implementation for the Matrix decentralized communication protocol.
Latest Element Synapse vulnerabilities
- CVE-2026-45078: Element Synapse CPU starvation denial of servicemediumCVSS 5.5EPSS 0.1%
- CVE-2026-45076: Matrix Synapse denial of service in room history paginationmediumCVSS 4EPSS 0.4%
- CVE-2024-37302: Element Synapse denial of service via media disk space consumptionhighCVSS 7.5EPSS 0.6%
- CVE-2024-31208: PYSEC-2024-50 - Synapse is an open-source Matrix homeserver. A remote Matrix user with malicious intent, sharing a room…lowCVSS 3.1EPSS 1.5%
Most severe Element Synapse vulnerabilities
Exploited in the wild first, then by severity and CVSS score.
- CVE-2024-37302: Element Synapse denial of service via media disk space consumptionhighCVSS 7.5EPSS 0.6%
- CVE-2026-45078: Element Synapse CPU starvation denial of servicemediumCVSS 5.5EPSS 0.1%
- CVE-2026-45076: Matrix Synapse denial of service in room history paginationmediumCVSS 4EPSS 0.4%
- CVE-2024-31208: PYSEC-2024-50 - Synapse is an open-source Matrix homeserver. A remote Matrix user with malicious intent, sharing a room…lowCVSS 3.1EPSS 1.5%
Vulnerabilities per week
Nothing was published in the last eight weeks. The last 13 weeks, by the week each vulnerability was published.
| Week of | Bar | Vulns | Critical |
|---|---|---|---|
| 17 Aug 2026 | 0 | 0 | |
| 24 Aug 2026 | 0 | 0 | |
| 31 Aug 2026 | 0 | 0 | |
| 7 Sep 2026 | 0 | 0 | |
| 14 Sep 2026 | 0 | 0 | |
| 21 Sep 2026 | 0 | 0 | |
| 28 Sep 2026 | 0 | 0 | |
| 5 Oct 2026 | 0 | 0 | |
| 12 Oct 2026 | 0 | 0 | |
| 19 Oct 2026 | 0 | 0 | |
| 26 Oct 2026 | 0 | 0 | |
| 2 Nov 2026 | 0 | 0 | |
| 9 Nov 2026 | 0 | 0 |
Embed a badge
A live badge for a README, a status page or an internal wiki: how many Element Synapse vulnerabilities were published in the last 7 days and how many of them are critical, refreshed hourly.
[](https://junglewise.ai/threats/technologies/synapse)<a href="https://junglewise.ai/threats/technologies/synapse"><img src="https://junglewise.ai/threats/technologies/synapse/badge.svg" alt="Element Synapse vulnerabilities" /></a>How this is built
Junglewise Threat Intelligence collects vulnerabilities from NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories, and matches each one to the technologies and vendors it affects. Dates are the date a vulnerability was published, in UTC.
The pages are rebuilt from the database every hour. Frozen weekly and monthly reports never change once published, so they can be cited.
Use this data
The same data is at https://junglewise.ai/threats/technologies/synapse.json, and this page as text at https://junglewise.ai/threats/technologies/synapse.md, for scripts and language models. It is free to reuse under CC BY 4.0 with a link back to this page.
Cite as: Junglewise Threat Intelligence, "Element Synapse vulnerabilities", https://junglewise.ai/threats/technologies/synapse, 11 November 2026.