OCTOBER 1, 2026
Live Feed
Back to database
Case File

CVE-2021-26715

CRITICAL · CVSS 9.1 EPSS 1.49% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2021-03-25 · Last synced 2026-08-04

CyberRota Analysis

This is a critical severity vulnerability with a CVSS score of 9.1. It affects Java. Public exploit code or proof-of-concept references have been detected in its references. Exploitation may require the attacker to be authenticated.

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-2021-26715
Severity
CRITICAL
CVSS
9.1
EPSS
1.49%
Java

Original NVD Description

The OpenID Connect server implementation for MITREid Connect through 1.3.3 contains a Server Side Request Forgery (SSRF) vulnerability. The vulnerability arises due to unsafe usage of the logo_uri parameter in the Dynamic Client Registration request. An unauthenticated attacker can make a HTTP request from the vulnerable server to any address in the internal network and obtain its response (which might, for example, have a JavaScript payload for resultant XSS). The issue can be exploited to bypass network boundaries, obtain sensitive data, or attack other hosts in the internal network.

Related CVEs

Other vulnerabilities affecting the same vendor(s)