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Case File

CVE-2021-31920

MEDIUM · CVSS 6.5 EPSS 1.17% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2021-05-27 · 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

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

CVE
CVE-2021-31920
Severity
MEDIUM
CVSS
6.5
EPSS
1.17%

Original NVD Description

Istio before 1.8.6 and 1.9.x before 1.9.5 has a remotely exploitable vulnerability where an HTTP request path with multiple slashes or escaped slash characters (%2F or %5C) could potentially bypass an Istio authorization policy when path based authorization rules are used.