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

published 2021-12-03 4 y ago modified 2026-06-17 4 mo ago also GHSA-hx6g-q9v2-xh7v , EUVD-2021-2535

cvss: 5.3; version 3.0, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 1.6%; EPSS 1.6% chance of exploitation in 30 days, percentile 75%
public exploits: 0; none known

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

Patch / fix

fixed in 2 links 2

packagist elgg/elgg 3.3.23, 4.0.5
elgg elgg/elgg 3.3.23

github.com/elgg/elgg@572d210 commit
github.com/Elgg/Elgg#13791 pull request

Exploit prediction

1.60% chance of exploitation in the next 30 days, higher than 75% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

huntr.dev https://huntr.dev/bounties/1f43f11e-4bd8-451f-a244-dc9541cdc0ac referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
CNA	3.0	5.3	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
NVD	3.1	7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
NVD	2.0	5.0	AV:N/AC:L/Au:N/C:P/I:N/A:N
GitHub	3.1	7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected packages

ecosystem	package	affected	fixed in
packagist	elgg/elgg	<3.3.23 >=4.0.0, <4.0.5	3.3.23 4.0.5

Affected products

elgg elgg/elgg

Classification

Weakness

CWE-359 Exposure of Private Personal Information to an Unauthorized Actor

References

github.com /elgg/elgg/commit/572d210e2392f1fdf47ff2f38665372a6535c126
web, patch, third-party-advisory
github.com /Elgg/Elgg/pull/13791
web
huntr.dev /bounties/1f43f11e-4bd8-451f-a244-dc9541cdc0ac
web, exploit, third-party-advisory
nvd.nist.gov /vuln/detail/CVE-2021-3980
advisory
github.com /Elgg/Elgg
package

Sources

CVE List CVE-2021-3980
GitHub Advisory GHSA-hx6g-q9v2-xh7v
NVD CVE-2021-3980

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary