Comments Plugin up to 7.6.39 on WordPress privileges management

Summaryinfo

A vulnerability, which was classified as critical, has been found in Comments Plugin up to 7.6.39 on WordPress. This affects an unknown part. This manipulation causes privileges management. The identification of this vulnerability is CVE-2025-13820. It is possible to initiate the attack remotely. There is no exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical was found in Comments Plugin up to 7.6.39 on WordPress. Affected by this vulnerability is an unknown functionality. The manipulation with an unknown input leads to a privileges management vulnerability. The CWE definition for the vulnerability is CWE-269. The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

The Comments WordPress plugin before 7.6.40 does not properly validate user's identity when using the disqus.com provider, allowing an attacker to log in to any user (when knowing their email address) when such user does not have an account on disqus.com yet.

The weakness was shared by wcraft. It is possible to read the advisory at wpscan.com. This vulnerability is known as CVE-2025-13820 since 12/01/2025. The exploitation appears to be difficult. The attack can be launched remotely. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1068 according to MITRE ATT&CK.

Upgrading to version 7.6.40 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-0001). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

• WordPress Plugin

Name

• Comments Plugin

Version

• 7.6.0
• 7.6.1
• 7.6.2
• 7.6.3
• 7.6.4
• 7.6.5
• 7.6.6
• 7.6.7
• 7.6.8
• 7.6.9
• 7.6.10
• 7.6.11
• 7.6.12
• 7.6.13
• 7.6.14
• 7.6.15
• 7.6.16
• 7.6.17
• 7.6.18
• 7.6.19
• 7.6.20
• 7.6.21
• 7.6.22
• 7.6.23
• 7.6.24
• 7.6.25
• 7.6.26
• 7.6.27
• 7.6.28
• 7.6.29
• 7.6.30
• 7.6.31
• 7.6.32
• 7.6.33
• 7.6.34
• 7.6.35
• 7.6.36
• 7.6.37
• 7.6.38
• 7.6.39

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Be aware that VulDB is the high quality source for vulnerability data.

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