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Case File

CVE-2018-10657

HIGH · CVSS 7.5 EPSS 1.51% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2018-05-02 · Last synced 2026-08-04

Field Assessment

AI analysis pending.

Exhibit — Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

Detected Signals
exploit
GitHub PoC Links

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2018-10657
Severity
HIGH
CVSS
7.5
EPSS
1.51%

Original Filing — NVD Description

Matrix Synapse before 0.28.1 is prone to a denial of service flaw where malicious events injected with depth = 2^63 - 1 render rooms unusable, related to federation/federation_base.py and handlers/message.py, as exploited in the wild in April 2018.