Read the docs
TI-2021-02956 Aliases CVE-2021-4072GHSA-2xw8-j43j-5vxp

Cross-site Scripting (XSS) - Stored in elgg/elgg

Priority LOW 26CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
Required
Attack complexity
Low
Impact type
Cross-site scripting
Confidentiality · integrity · availability
Low · Low · None
Fix status
Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub. Impact type from CWE-79.

Summary

elgg is vulnerable to Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Why it matters now

EPSS 0.00721 54th percentileScored 2026-11-08
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed elgg/elgg (elgg): 3.3.24elgg/elgg (Packagist): 3.3.24

SSVC decision points

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

Affected products

VendorProductAffected versionsFixed inStatusSource
Elggelgg/elggbefore 3.3.243.3.24Patch availableCNA
—elgg/elgg (Packagist)before 3.3.243.3.24Patch availableGHSA-2xw8-j43j-5vxp
  • elgg/elgg VendorElgg Affected before 3.3.24 Fixed in 3.3.24 Patch available CNA
  • elgg/elgg (Packagist) Vendor— Affected before 3.3.24 Fixed in 3.3.24 Patch available GHSA-2xw8-j43j-5vxp

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:elgg:elgg:*:*:*:*:*:*:*:*before 3.3.24VulnerableElgg
  • cpe:2.3:a:elgg:elgg:*:*:*:*:*:*:*:* Versions before 3.3.24 Vulnerable ·Elgg

Remediation

  • Fix · CNA elgg/elgg (elgg) Fixed in 3.3.24
  • Fix · GHSA-2xw8-j43j-5vxp elgg/elgg (Packagist) Fixed in 3.3.24 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-4072
  2. 2026-10-03 Alias added: GHSA-2xw8-j43j-5vxp

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-2021-02861 Authorization Bypass Through User-Controlled Key in elgg/elgg CVSS 3.1MEDIUM 5.9
See all 10 →

Sources

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