8.1

CVE-2018-16466: nextcloud nextcloud_server Improper Access Control

CVSS: 8.1v3.0HighModified
Published 30-10-2018Last modified 05-08-2024
Open JSON

Vulnerability summary

CVE-2018-16466 is a high (CVSS 8.1) Improper Access Control vulnerability in nextcloud nextcloud_server. EPSS estimates a 0.96% chance of exploitation in the next 30 days, higher than 60.7% of scored vulnerabilities.

Overall risk
33/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.1/10
010
High · v3.0 (NVD)
EPSS score
0.96%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 30-10-2018
    PublishedVulnerability first disclosed.
  2. 05-08-2024
    Last modifiedVulnerability information updated.

Description

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 metrics

2 scores · 1 source · 2 versions

EPSS trend

Probability

0.96%

Chance of exploitation in the next 30 days

Percentile

61%

Versus all other CVEs

30-day change

0.00 pp

From 0.96% on 18-09-2026

18-09-202618-10-2026
EPSS score
0.96%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Nextcloud1 product
  • nextcloud_serverEOL< 12.0.11 | ≥ 13.0.0, < 13.0.6 | 14.0.0:beta1 | 14.0.0:beta2 | 14.0.0:beta3 | 14.0.0:beta4 | 14.0.0:rc1 | 14.0.0:rc2

1 vendor · 1 product

References

2 links