CVE-2021-32652: nextcloud mail Improper Access Control
Vulnerability summary
CVE-2021-32652 is a high (CVSS 8.8) Improper Access Control vulnerability in nextcloud mail. EPSS estimates a 1.11% chance of exploitation in the next 30 days, higher than 65.3% of scored vulnerabilities. 1 public exploit is recorded.
Timeline
- 01-06-2021PublishedVulnerability first disclosed.
- 03-08-2024Last modifiedVulnerability information updated.
Description
Nextcloud Mail is a mail app for the Nextcloud platform. A missing permission check in Nextcloud Mail before 1.4.3 and 1.8.2 allows another authenticated users to access mail metadata of other users. Versions 1.4.3 and 1.8.2 contain patches for this vulnerability; no workarounds other than the patches are known to exist.
CVSS metrics
3 scores · 2 sources · 2 versions- NVDNIST4.3MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:NDiffers
EPSS trend
Probability
1.11%
Chance of exploitation in the next 30 days
Percentile
65%
Versus all other CVEs
30-day change
0.00 pp
From 1.11% on 19-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
1 foundExploit Reference (hackerone.com)
Maturity: unknown
Weaknesses
CWE · root causeAffected systems
Nextcloud2 products
- mail< 1.4.3 | ≥ 1.5.5, < 1.8.2
- security-advisories< 1.4.3 | ≥ 1.5.5, < 1.8.2
1 vendor · 2 products
References
2 links- github.com/nextcloud/security-advisories/security/advisories/GHSA-mxx2-6rg9-v2vcX Refsource CONFIRMThird Party Advisory