AUGUST 5, 2026
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Case File

CVE-2021-31826

HIGH · CVSS 7.5 EPSS 2.00% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2021-04-27 · Last synced 2026-08-04

CyberRota Analysis

This is a high severity vulnerability with a CVSS score of 7.5. 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.

Detected Signals
exploit

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

CVE
CVE-2021-31826
Severity
HIGH
CVSS
7.5
EPSS
2.00%

Original NVD Description

Shibboleth Service Provider 3.x before 3.2.2 is prone to a NULL pointer dereference flaw involving the session recovery feature. The flaw is exploitable (for a daemon crash) on systems not using this feature if a crafted cookie is supplied.

Related CVEs

Other vulnerabilities affecting the same vendor(s)