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CVE-2022-31131

Date: July 6, 2022

Nextcloud mail is a Mail app for the Nextcloud home server product. Versions of Nextcloud mail prior to 1.12.2 were found to be missing user account ownership checks when performing tasks related to mail attachments. Attachments may have been exposed to incorrect system users. It is recommended that the Nextcloud Mail app is upgraded to 1.12.2. There are no known workarounds for this issue. ### Workarounds No workaround available ### References * "Pull request" (https://github.com/nextcloud/mail/pull/6600) * "HackerOne" (https://hackerone.com/reports/1579820) ### For more information If you have any questions or comments about this advisory: * Create a post in "nextcloud/security-advisories" (https://github.com/nextcloud/security-advisories/discussions) * Customers: Open a support ticket at "support.nextcloud.com" (https://support.nextcloud.com)

Language: PHP

Severity Score

Severity Score

Weakness Type (CWE)

Improper Authentication

CWE-287

Authorization Bypass Through User-Controlled Key

CWE-639

CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): LOW
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): LOW
Integrity (I): LOW
Availability (A): NONE

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): LOW
Authentication (AU): SINGLE
Confidentiality (C): NONE
Integrity (I): PARTIAL
Availability (A): NONE
Additional information:

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