How severe is CVE-2021-3980?

CVE-2021-3980 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2021-3980 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (72nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-3980?

CVE-2021-3980 affects Elgg. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-3980?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2021-3980 published?

CVE-2021-3980 was published on 2021-12-03 and last updated on 2026-06-17.

CVE-2021-3980

CVE-2021-3980 is a high-severity vulnerability in Elgg with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-359.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 2% (72nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-359
Affected product: Elgg
Published: 2021-12-03
Last modified: 2026-06-17

Description

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

Frequently asked questions

What is CVE-2021-3980?: elgg is vulnerable to Exposure of Private Personal Information to an Unauthorized Actor
How severe is CVE-2021-3980?: CVE-2021-3980 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2021-3980 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (72nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-3980?: CVE-2021-3980 affects Elgg. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-3980?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2021-3980 published?: CVE-2021-3980 was published on 2021-12-03 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:elgg:elgg:*:*:*:*:*:*:*:*

More vulnerabilities in Elgg

CVE-2011-2936 — Critical (CVSS 9.8): Elgg through 1.7.10 has a SQL injection vulnerability
CVE-2012-6562 — Medium (CVSS 6.8): engine/lib/users.php in Elgg before 1.8.5 does not properly specify permissions for the useradd action, which allows…
CVE-2011-2935 — Medium (CVSS 6.1): Elgg through 1.7.10 has XSS
CVE-2019-11016 — Medium (CVSS 6.1): Elgg before 1.12.18 and 2.3.x before 2.3.11 has an open redirect.
CVE-2021-3964 — Medium (CVSS 5.9): elgg is vulnerable to Authorization Bypass Through User-Controlled Key
CVE-2021-4072 — Medium (CVSS 5.4): elgg is vulnerable to Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

All CVEs affecting Elgg →

Other CWE-359 vulnerabilities

CVE-2022-0482 — Critical (CVSS 9.1): Exposure of Private Personal Information to an Unauthorized Actor in GitHub repository alextselegidis/easyappointments…
CVE-2022-2921 — High (CVSS 8.8): Exposure of Private Personal Information to an Unauthorized Actor in GitHub repository notrinos/notrinoserp prior to…
CVE-2025-53625 — High (CVSS 8.7): The DynamicPageList3 extension is a reporting tool for MediaWiki, listing category members and intersections with…
CVE-2025-13008 — High (CVSS 8.6): An information disclosure vulnerability in M-Files Server before versions 25.12.15491.7, 25.8 LTS SR3, 25.2 LTS SR3 and…
CVE-2023-36052 — High (CVSS 8.6): Azure CLI REST Command Information Disclosure Vulnerability
CVE-2024-26192 — High (CVSS 8.2): Microsoft Edge (Chromium-based) Information Disclosure Vulnerability

Browse all CWE-359 vulnerabilities →