CVE-2020-8181

MEDIUMCVSS 4.3

4.3

A missing file type check in Nextcloud Contacts 3.2.0 allowed a malicious user to upload any file as avatars.

CVSS v3: 4.3
EG Score: —
EPSS: —
KEV: Not listed

Published

July 10, 2020

Last Modified

November 21, 2024

References (4)

support@hackeronehttps://hackerone.com/reports/808287%2C
support@hackeronehttps://nextcloud.com/security/advisory/?id=NC-SA-2020-024
af854a3a-2127-422b-91ae-364da2661108https://hackerone.com/reports/808287%2C
af854a3a-2127-422b-91ae-364da2661108https://nextcloud.com/security/advisory/?id=NC-SA-2020-024

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 8× in last 7d / 8× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-05-27 13:39 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-27 01:30 UTCEG score recompute
2026-05-27 01:30 UTCGHSA enrichment
2026-05-26 13:42 UTCepss_batch
2026-05-26 13:42 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-26 07:17 UTCepss_batch

Frequently asked(4)

What is CVE-2020-8181?

CVE-2020-8181 is a medium vulnerability published on July 10, 2020. A missing file type check in Nextcloud Contacts 3.2.0 allowed a malicious user to upload any file as avatars.

When was CVE-2020-8181 disclosed?

CVE-2020-8181 was first published in the National Vulnerability Database on July 10, 2020, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

What is the CVSS score of CVE-2020-8181?

CVE-2020-8181 has a CVSS v3 base score of 4.3 (NVD).

How do I remediate CVE-2020-8181?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2020-8181, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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CVE-2020-8181

📅 Published

🔄 Last Modified

🔗 References (4)