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TI-2021-12320 Aliases CVE-2021-32652

Missing permission check on email metadata retrieval

Priority MEDIUM 40CWE-284Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-284.

Summary

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.

Why it matters now

EPSS 0.01107 66th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed security-advisories (nextcloud): 1.4.3, 1.8.2

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
nextcloudsecurity-advisoriesbefore 1.4.3; 1.5.5 to before 1.8.21.4.3, 1.8.2Patch availableCNA
  • security-advisories Vendornextcloud Affected before 1.4.3; 1.5.5 to before 1.8.2 Fixed in 1.4.3, 1.8.2 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:nextcloud:mail:*:*:*:*:*:*:*:*before 1.4.3; 1.5.5 to before 1.8.2Vulnerablenextcloud
  • cpe:2.3:a:nextcloud:mail:*:*:*:*:*:*:*:* Versions before 1.4.3; 1.5.5 to before 1.8.2 Vulnerable ·nextcloud

Remediation

  • Fix · CNA security-advisories (nextcloud) Fixed in 1.4.3, 1.8.2

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-32652

References

Exploit 1

Advisory 1

  • TI-2023-09741 Blind SSRF via server URL input in the Nextcloud Mail app CVSS 3.1MEDIUM 5.0
  • TI-2022-13176 Unauthenticated SSRF in 3rd party module "cerdic/csstidy" CVSS 3.1CRITICAL 9.8
  • TI-2023-26170 Nextcloud Mail app vulnerable to Server-Side Request Forgery CVSS 3.1CRITICAL 9.8
  • TI-2024-35179 Nextcloud Mail auto configurator can be tricked into sending account information to wrong servers CVSS 3.1HIGH 8.2
  • TI-2020-06574 A missing verification of the TLS host in Nextcloud Mail 1.1.3 allowed a man in the middle attack. CVSS 3.1HIGH 7.0
  • TI-2023-09742 Nexcloud Mail app temporarily stores cleartext password in database CVSS 3.1MEDIUM 6.5
See all 14 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences