8.1

CVE-2021-39225: nextcloud deck

CVSS: 8.1v3.1HighModified
Published 25-10-2021Last modified 04-08-2024
Open JSON

Vulnerability summary

CVE-2021-39225 is a high (CVSS 8.1) vulnerability in nextcloud deck. EPSS estimates a 1.34% chance of exploitation in the next 30 days, higher than 70.7% of scored vulnerabilities.

Overall risk
33/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.1/10
010
High · v3.1 (CVE.org)
EPSS score
1.34%
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. 25-10-2021
    PublishedVulnerability first disclosed.
  2. 04-08-2024
    Last modifiedVulnerability information updated.

Description

Nextcloud is an open-source, self-hosted productivity platform. A missing permission check in Nextcloud Deck before 1.2.9, 1.4.5 and 1.5.3 allows another authenticated users to access Deck cards of another user. It is recommended that the Nextcloud Deck App is upgraded to 1.2.9, 1.4.5 or 1.5.3. There are no known workarounds aside from upgrading.

CVSS metrics

3 scores · 2 sources · 2 versions

EPSS trend

Probability

1.34%

Chance of exploitation in the next 30 days

Percentile

71%

Versus all other CVEs

30-day change

0.00 pp

From 1.34% on 19-09-2026

19-09-202619-10-2026
EPSS score
1.34%

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

Nextcloud2 products
  • deck< 1.2.9 | ≥ 1.3.0, < 1.4.5 | ≥ 1.5.0, < 1.5.3
  • security-advisories< 1.2.9 | ≥ 1.4.0, < 1.4.5 | ≥ 1.5.0, < 1.5.3

1 vendor · 2 products

References

3 links