AUGUST 4, 2026
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Case File

CVE-2021-29433

MEDIUM · CVSS 4.3 EPSS 0.93% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2021-04-15 · Last synced 2026-08-04

CyberRota Analysis

AI analysis pending.

Public Exploit Signal

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

GitHub PoC Links
github.com ↗ github.com ↗

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

CVE
CVE-2021-29433
Severity
MEDIUM
CVSS
4.3
EPSS
0.93%

Original NVD Description

Sydent is a reference Matrix identity server. In Sydent versions 2.2.0 and prior, sissing input validation of some parameters on the endpoints used to confirm third-party identifiers could cause excessive use of disk space and memory leading to resource exhaustion. A patch for the vulnerability is in version 2.3.0. No workarounds are known to exist.