AUGUST 4, 2026
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Case File

CVE-2021-31590

HIGH · CVSS 8.8 EPSS 2.65% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2021-07-19 · Last synced 2026-08-04

CyberRota Analysis

This is a high severity vulnerability with a CVSS score of 8.8. Public exploit code or proof-of-concept references have been detected in its references.

Public Exploit Signal

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

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

CVE
CVE-2021-31590
Severity
HIGH
CVSS
8.8
EPSS
2.65%

Original NVD Description

PwnDoc all versions until 0.4.0 (2021-08-23) has incorrect JSON Webtoken handling, leading to incorrect access control. With a valid JSON Webtoken that is used for authentication and authorization, a user can keep his admin privileges even if he is downgraded to the "user" privilege. Even after a user's account is deleted, the user can still access the administration panel (and add or delete users) and has complete access to the system.

Related CVEs

Other vulnerabilities affecting the same vendor(s)