What’s Vulnerable › Products
matrix-org synapse vulnerabilities
42 known vulnerabilities, 0 confirmed exploited in the wild (CISA KEV), 8 published in the last 12 months.
Check whether your matrix-org synapse version is affected
Latest matrix-org synapse vulnerabilities
- CVE-2025-61672 — Synapse: Invalid device keys degrade federation functionality (CVSS 5.3)
- CVE-2025-30355 — Synapse vulnerable to federation denial of service via malformed events (CVSS 7.5)
- CVE-2024-53867 — Synapse Matrix has a partial room state leak via Sliding Sync (CVSS 4.3)
- CVE-2024-53863 — Synapse can be forced to thumbnail unexpected file formats, invoking external, potentially untrustworthy decoders (CVSS 9.1)
- CVE-2024-52815 — Synapse allows a a malformed invite to break the invitee's `/sync` (CVSS 5.3)
- CVE-2024-52805 — Synapse allows unsupported content types to lead to memory exhaustion (CVSS 7.5)
- CVE-2024-37303 — Synapse unauthenticated writes to the media repository allow planting of problematic content (CVSS 5.3)
- CVE-2024-37302 — Synapse denial of service through media disk space consumption (CVSS 7.5)
- CVE-2024-31208 — Synapse's V2 state resolution weakness allows DoS from remote room members (CVSS 6.5)
- CVE-2023-43796 — Synapse vulnerable to leak of remote user device information (CVSS 5.3)
- CVE-2023-45129 — matrix-synapse vulnerable to denial of service due to malicious server ACL events (CVSS 4.9)
- CVE-2023-42453 — Improper validation of receipts allows forged read receipts in matrix synapse (CVSS 4.3)
- CVE-2023-41335 — Temporary storage of plaintext passwords during password changes in matrix synapse (CVSS 3.7)
- CVE-2023-32683 — URL deny list bypass via oEmbed and image URLs when generating previews in Synapse (CVSS 5.4)
- CVE-2023-32682 — Improper checks for deactivated users during login in synapse (CVSS 5.4)
- CVE-2023-32323 — Synapse Outgoing federation to specific hosts can be disabled by sending malicious invites (CVSS 4.3)
- CVE-2022-39374 — Synapse Denial of service due to incorrect application of event authorization rules during state resolution (CVSS 6.5)
- CVE-2022-39335 — Synapse does not apply enough checks to servers requesting auth events of events in a room (CVSS 5.0)
- CVE-2022-41952 — Uncontrolled Resource Consumption in Matrix Synapse (CVSS 5.3)
- CVE-2022-31152 — Synapse vulnerable to denial of service (DoS) due to incorrect application of event authorization rules (CVSS 7.5)
- CVE-2022-31052 — URL previews can crash Synapse media repositories or Synapse monoliths (CVSS 6.5)
- CVE-2021-41281 — Path traversal in Matrix Synapse (CVSS 4.3)
- CVE-2021-39164 — Improper authorisation of /members discloses room membership to non-members (CVSS 3.1)
- CVE-2021-39163 — Adding a private/unlisted room to a community exposes room metadata in an unauthorised manner. (CVSS 3.1)
- CVE-2021-29471 — Denial of service in Matrix Synapse (CVSS 5.3)