CVE-2021-4072

lowpriority · track · 22EPSS 0.007 · 54 %ileEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.72% (54th) EPSS

CVSS 3.5 · low

Is it mine?

3 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · nvd · osv

EPSS · scored 2026-10-27

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

cvss

Technical severity, 0–10. One row per scoring source.

9.0

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · low–critical · 3.5–9

v2.03.5lowAV:N/AC:M/Au:S/C:N/I:P/A:Nprimary · NVD / NIST USexploitability 6.8 · impact 2.9

v3.15.4mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:Nprimary · NVD / NIST USexploitability 2.3 · impact 2.7

v3.09criticalCVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:Hsecondary · ENISA EU

v3.09criticalCVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:Hsecondary · security@huntr.devexploitability 2.3 · impact 6

v3.15.4mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:Nsecondary · OSV

v3.15mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-79USprimaryCWE-79US

affected products (3)

Products and version ranges known to be affected.

Elgg elgg/elggunspecified → 3.3.24enisa_euvdEU
elgg elgg< 3.3.24nvdUScpe:2.3:a:elgg:elgg:*:*:*:*:*:*:*:*
Packagist elgg/elgg< 3.3.24osvUSpkg:composer/elgg/elgg

advisories (1)

Vendor and ecosystem advisories describing this.

GHSA-2xw8-j43j-5vxpelgg is vulnerable to Cross-site Scripting2022-01-06ghsa · osvUS
elgg is vulnerable to Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd nvd osv NVD CVE.org MITRE

published 2021-12-24modified 2026-06-17

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Related entries.

ID	severity	EPSS	exploitable	published
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Roundcube Webmail before 1.5.12 and 1.6 before 1.6.12 is prone to a Cross-Site-Scripting (XSS) vulnerability via the animate tag in an SVG document.
CVE-2025-48700US	—OT critical	1.71% (77th)	KEV	2025-06-23
An issue was discovered in Zimbra Collaboration (ZCS) 8.8.15 and 9.0 and 10.0 and 10.1. A Cross-Site Scripting (XSS) vulnerability in the Zimbra Classic UI allows attackers to exec…
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An issue was discovered in Zimbra Collaboration (ZCS) 9.0 and 10.0 and 10.1. A stored cross-site scripting (XSS) vulnerability exists in the Classic Web Client due to insufficient…

+53015 more

references (8)

External citations — patches, advisories, analysis.

scry

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