CVE-2018-16466

HIGHNVD 8.1

8.1

Improper revalidation of permissions in Nextcloud Server prior to 14.0.0, 13.0.6 and 12.0.11 lead to not accepting access restrictions by acess tokens.

CVSS v3: 8.1
EG Score: —
EPSS: 30.4%
KEV: Not listed

Published

October 30, 2018

Last Modified

November 21, 2024

References (4)

support@hackeronehttps://hackerone.com/reports/388515
support@hackeronehttps://nextcloud.com/security/advisory/?id=NC-SA-2018-010
af854a3a-2127-422b-91ae-364da2661108https://hackerone.com/reports/388515
af854a3a-2127-422b-91ae-364da2661108https://nextcloud.com/security/advisory/?id=NC-SA-2018-010

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 7× in last 7d / 7× 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 13:38 UTCepss_batch
2026-05-27 13:38 UTCepss_batch
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
2026-05-25 04:07 UTCOSV refresh

Frequently asked(5)

What is CVE-2018-16466?

CVE-2018-16466 is a high vulnerability published on October 30, 2018. Improper revalidation of permissions in Nextcloud Server prior to 14.0.0, 13.0.6 and 12.0.11 lead to not accepting access restrictions by acess tokens.

When was CVE-2018-16466 disclosed?

CVE-2018-16466 was first published in the National Vulnerability Database on October 30, 2018, 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.

Is CVE-2018-16466 actively exploited?

CVE-2018-16466 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 30.4% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2018-16466?

CVE-2018-16466 has a CVSS v3 base score of 8.1 (NVD).

How do I remediate CVE-2018-16466?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2018-16466, 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-2018-16466

📅 Published

🔄 Last Modified

🔗 References (4)