CVE-2026-5144
BuddyPress Groupblog <= 1.9.3 - Authenticated (Subscriber+) Privilege Escalation to Administrator via Group Blog IDOR
- Published
- Updated
- Reserved
- Assigned by
- Wordfence
Description
The BuddyPress Groupblog plugin for WordPress is vulnerable to Privilege Escalation in all versions up to, and including, 1.9.3. This is due to the group blog settings handler accepting the `groupblog-blogid`, `default-member`, and `groupblog-silent-add` parameters from user input without proper authorization checks. The `groupblog-blogid` parameter allows any group admin (including Subscribers who create their own group) to associate their group with any blog on the Multisite network, including the main site (blog ID 1). The `default-member` parameter accepts any WordPress role, including `administrator`, without validation against a whitelist. When combined with `groupblog-silent-add`, any user who joins the attacker's group is automatically added to the targeted blog with the injected role. This makes it possible for authenticated attackers, with Subscriber-level access and above, to escalate any user (including themselves via a second account) to Administrator on the main site of the Multisite network.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| WordfenceCNA (assigner) | 3.1 | High8.8 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVDNVD · Deferred | 3.1 | High8.8 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.41% · top 65% of all CVEs (6 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: total
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 8.8.
Weakness
Affected products
boonebgorges · BuddyPress Groupblog
- affected ≤ 1.9.3
References (8)
- https://www.wordfence.com/threat-intel/vulnerabilities/id/8129046a-5aa5-4644-babc-0eca9aa524d2?source=cve (opens in a new tab)
- https://plugins.trac.wordpress.org/browser/bp-groupblog/trunk/bp-groupblog.php#L450 (opens in a new tab)
- https://plugins.trac.wordpress.org/browser/bp-groupblog/tags/1.9.3/bp-groupblog.php#L450 (opens in a new tab)
- https://plugins.trac.wordpress.org/browser/bp-groupblog/trunk/bp-groupblog.php#L190 (opens in a new tab)
- https://plugins.trac.wordpress.org/browser/bp-groupblog/tags/1.9.3/bp-groupblog.php#L190 (opens in a new tab)
- https://plugins.trac.wordpress.org/browser/bp-groupblog/trunk/bp-groupblog.php#L220 (opens in a new tab)
- https://plugins.trac.wordpress.org/browser/bp-groupblog/tags/1.9.3/bp-groupblog.php#L220 (opens in a new tab)
- https://github.com/boonebgorges/bp-groupblog/commit/b824593add9e2c53ef4f0d2e0824d4de0785411f (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2026-5144)Record last updated .