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TI-2021-02861 Aliases CVE-2021-3964GHSA-gwpx-q2h9-wxgx

Authorization Bypass Through User-Controlled Key in elgg/elgg

Priority LOW 28CWE-639Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
High
Impact type
Security bypass
Confidentiality · integrity · availability
None · High · None
Fix status
Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub. Impact type from CWE-639.

Summary

elgg is vulnerable to Authorization Bypass Through User-Controlled Key

Why it matters now

EPSS 0.00805 56th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed elgg/elgg (elgg): 3.3.22elgg/elgg (Packagist): 3.3.22

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
Elggelgg/elggbefore 3.3.223.3.22Patch availableCNA
—elgg/elgg (Packagist)before 3.3.223.3.22Patch availableGHSA-gwpx-q2h9-wxgx
  • elgg/elgg VendorElgg Affected before 3.3.22 Fixed in 3.3.22 Patch available CNA
  • elgg/elgg (Packagist) Vendor— Affected before 3.3.22 Fixed in 3.3.22 Patch available GHSA-gwpx-q2h9-wxgx

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:elgg:elgg:*:*:*:*:*:*:*:*before 3.3.22VulnerableElgg
  • cpe:2.3:a:elgg:elgg:*:*:*:*:*:*:*:* Versions before 3.3.22 Vulnerable ·Elgg

Remediation

  • Fix · CNA elgg/elgg (elgg) Fixed in 3.3.22
  • Fix · GHSA-gwpx-q2h9-wxgx elgg/elgg (Packagist) Fixed in 3.3.22 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-3964
  2. 2026-10-03 Alias added: GHSA-gwpx-q2h9-wxgx

References

Exploit 1

Patch 1

Advisory 1

Other 1

  • TI-2011-02588 Elgg through 1.7.10 has a SQL injection vulnerability CVSS 3.1CRITICAL 9.8
  • TI-2021-02877 Exposure of Private Personal Information to an Unauthorized Actor in elgg/elgg CVSS 3.1HIGH 7.5
  • TI-2012-05280 engine/lib/users.php in Elgg before 1.8.5 does not properly specify permissions for the… CVSS 2.0MEDIUM 6.8
  • TI-2019-08233 Elgg before 1.12.18 and 2.3.x before 2.3.11 has an open redirect. CVSS 3.0MEDIUM 6.1
  • TI-2011-02587 Elgg through 1.7.10 has XSS CVSS 3.1MEDIUM 6.1
  • TI-2021-02956 Cross-site Scripting (XSS) - Stored in elgg/elgg CVSS 3.1MEDIUM 5.4
See all 10 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences