CVE-2021-3980

Exposure of Private Personal Information to an Unauthorized Actor in elgg/elgg

5.3 MediumFix available

elgg is vulnerable to Exposure of Private Personal Information to an Unauthorized Actor

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: Low
Integrity: None
Availability: None

Exploit likelihood

1.60%Up 1.0 points since Dec 4, 2021

What each source reports

CVE List Score used 5.3

Exposure of Private Personal Information to an Unauthorized Actor in elgg/elgg

elgg is vulnerable to Exposure of Private Personal Information to an Unauthorized Actor

Record: CVE-2021-3980
CVSS 3.0: 5.3 MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Weakness: CWE-359
Updated: 2026-11-02

EUVDEUVD-2021-2535 5.3

elgg is vulnerable to Exposure of Private Personal Information to an Unauthorized Actor

Record: EUVD-2021-2535
CVSS 3.0: 5.3 MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Updated: 2026-11-03

GitHub AdvisoriesGHSA-hx6g-q9v2-xh7v 7.5

Information exposure in elgg

elgg is vulnerable to Exposure of Private Personal Information to an Unauthorized Actor. Forms in the view namespace 'forms/admin' were not protected by an AdminGatekeeper in case of AJAX requests to 'ajax/form/admin/'.

Record: GHSA-hx6g-q9v2-xh7v
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Weakness: CWE-359
Updated: 2026-11-02

NVD 7.5

elgg is vulnerable to Exposure of Private Personal Information to an Unauthorized Actor

Record: CVE-2021-3980
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CVSS 3.0: 5.3 MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
CVSS 2.0: 5.0 MediumAV:N/AC:L/Au:N/C:P/I:N/A:N
Weakness: CWE-359
Updated: 2026-11-02

OSV 7.5

elgg is vulnerable to Exposure of Private Personal Information to an Unauthorized Actor

Record: CVE-2021-3980
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Updated: 2026-11-02

OSVGHSA-hx6g-q9v2-xh7v 7.5

Information exposure in elgg

Record: GHSA-hx6g-q9v2-xh7v
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Weakness: CWE-359
Updated: 2026-11-02

Affected products

Affected packages

Affected packages
Package	Affected	Fixed
`elgg/elgg` Packagist	before 3.3.23	3.3.23
`elgg/elgg` Packagist	4.0.0 up to 4.0.5	4.0.5
`elgg/elgg` Packagist	before 3.3.23, plus listed versions 1.10.01.10.0-rc.11.10.11.10.21.10.3 Show 45 moreShow less 1.10.41.10.51.10.61.11.01.11.11.11.21.11.31.11.41.11.51.11.61.12.01.12.11.12.101.12.111.12.121.12.131.12.141.12.151.12.161.12.171.12.181.12.21.12.31.12.41.12.51.12.61.12.71.12.81.12.91.9.01.9.0-rc.11.9.0-rc.21.9.0-rc.31.9.0-rc.41.9.0-rc.51.9.0-rc.61.9.0-rc.71.9.11.9.21.9.31.9.41.9.51.9.61.9.71.9.8	3.3.23
`elgg/elgg` Packagist	4.0.0 up to 4.0.5, plus listed versions 4.0.14.0.24.0.34.0.4	4.0.5

History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2021-3980 is a medium vulnerability (CVSS 5.3) in Elgg, published December 3, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.60%, the 75th percentile. Fixed in elgg/elgg 3.3.23.

References

This page doesn't list everything

Left out here: 90 versions. The JSON record has them.