AUGUST 4, 2026
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Case File

CVE-2021-45958

MEDIUM · CVSS 5.5 EPSS 1.55% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2022-01-01 · 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.

Detected Signals
exploit
GitHub PoC Links
github.com ↗ github.com ↗ github.com ↗ github.com ↗

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

CVE
CVE-2021-45958
Severity
MEDIUM
CVSS
5.5
EPSS
1.55%

Original NVD Description

UltraJSON (aka ujson) through 5.1.0 has a stack-based buffer overflow in Buffer_AppendIndentUnchecked (called from encode). Exploitation can, for example, use a large amount of indentation.