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Groups vulnerabilities
Groups has 3 known vulnerabilities in this database. The most recent published record is dated 26 Sep 2026.
- Known vulnerabilities
- 3
- Active installs
- 10,000+
- Latest version
- 4.8.0
- Last updated
- 24 Sep 2026
- Most recent
- 26 Sep 2026
Find it in your WordPress dashboard under Plugins. Severity is based on the CVSS score published with the CVE where one is available.
| Vulnerability | Severity | Affected | Fix | Published |
|---|---|---|---|---|
| Privilege escalation CVE-2026-77203 | High 8.8 | Up to 4.6.0 | Fixed in a later version (latest 4.8.0) | 11 d ago |
| Cross-site scripting (XSS) CVE-2026-0549 | Medium 6.4 | Up to 3.10.0 | Fixed in a later version (latest 4.8.0) | 19 Feb 2026 |
| Broken access control CVE-2025-11748 | Medium 4.3 | Up to 3.7.0 | Fixed in a later version (latest 4.8.0) | 8 Nov 2025 |
Read the published descriptions
- CVE-2026-77203, 26 Sep 2026
- The Groups - Memberships and Access Control plugin for WordPress is vulnerable to Privilege Escalation in all versions up to, and including, 4.6.0. This is due to the groups_join() function deriving group-join eligibility from the ambient post's author capabilities via the global $post->post_author rather than from the currently authenticated user's own capabilities, while simultaneously minting and returning a valid groups-join-data hash and WordPress nonce for the caller in the same response - eliminating all authorization barriers to self-enrollment. This makes it possible for authenticated attackers, with Subscriber-level access and above, to enroll themselves into any group including privileged groups carrying the groups_admin_groups capability, and to subsequently create and join a group containing every registered WordPress capability, effectively escalating their privileges to Administrator. Exploitation requires the attacker to supply an Administrator-authored post ID via the post_ID parameter of the authenticated wp_ajax_parse_media_shortcode handler in order to establish the privileged ambient post context used by the flawed authorization check. CVE record
- CVE-2026-0549, 19 Feb 2026
- The Groups plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's 'groups_group_info' shortcode in all versions up to, and including, 3.10.0 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. CVE record
- CVE-2025-11748, 8 Nov 2025
- The Groups plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 3.7.0 via the 'group_id' parameter of the group_join function due to missing validation on a user controlled key. This makes it possible for authenticated attackers, with Subscriber-level access and above, to register for groups other than ones set in the shortcode. CVE record
What to do if you run Groups
If you run Groups, open WordPress and check the installed version in Plugins. Compare it with the affected versions in the vulnerability record. If a fixed version is available, take a current backup and update to that version or the latest supported release.
If no fixed version exists, consider disabling and removing the plugin or replacing it with a maintained alternative. After dealing with the affected software, check administrator users, unexpected file changes, redirects, unfamiliar pages and security logs for signs that the site may already have been altered.
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