CVE-2026-91856Storage Rentals <= 2.22.0 - Unauthenticated Insecure Direct Object Reference to Arbitrary User Disclosure and Modification via 'userId' Parameter
- 7.5HighCVSS base score
- 0.40%Exploitation in 30 daysEPSS · top 65% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
The 6Storage Rentals plugin for WordPress is vulnerable to Authorization Bypass Through User-Controlled Key in all versions up to and including 2.22.0 via the `userId` parameter of the `six_storage_get_user_info` and `six_storage_update_profile` AJAX actions. This is due to the `six_storage_getUserInfo()` and `six_storage_updateProfile()` functions being registered on `wp_ajax_nopriv_*` hooks and accepting a tenant identifier directly from `$_POST['userId']` without performing any ownership verification, session binding, or nonce validation to confirm the requester has a legitimate relationship to the supplied ID. This makes it possible for unauthenticated attackers to read and modify arbitrary tenants' profile data — including name, email address, phone number, physical address, and SSN — by supplying an enumerated `userId` value in a crafted request to either handler.
Timeline
ID reserved
By Wordfence
- 19 days later
· 19 days later
Published
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| WordfenceCNA (assigner) | 3.1 | High7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
| NVDNVD · Deferred | 3.1 | High7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
- EPSS (exploitation in 30 days)
- 0.40% · top 65% of all CVEs (12 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: yes · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.5.
Affected products
- affected ≤ 2.22.0
References
References11
- https://www.wordfence.com/threat-intel/vulnerabilities/id/74fa4240-6f62-4db6-b7e7-56998fc29e42?source=cve (opens in a new tab)
- https://plugins.trac.wordpress.org/browser/6storage-rentals/tags/2.22.0/inc/Base/Six_Storage_DashboardController.php#L998 (opens in a new tab)
- https://plugins.trac.wordpress.org/browser/6storage-rentals/tags/2.22.0/inc/Base/Six_Storage_DashboardController.php#L1955 (opens in a new tab)
- https://plugins.trac.wordpress.org/browser/6storage-rentals/tags/2.22.0/inc/Base/Six_Storage_DashboardController.php#L11 (opens in a new tab)
- https://plugins.trac.wordpress.org/browser/6storage-rentals/tags/2.22.0/inc/Base/Six_Storage_DashboardController.php#L995 (opens in a new tab)
- https://plugins.trac.wordpress.org/browser/6storage-rentals/tags/2.22.0/inc/Base/Six_Storage_DashboardController.php#L1931 (opens in a new tab)
- https://plugins.trac.wordpress.org/browser/6storage-rentals/tags/2.20.2/inc/Base/Six_Storage_DashboardController.php#L998 (opens in a new tab)
- https://plugins.trac.wordpress.org/browser/6storage-rentals/tags/2.20.2/inc/Base/Six_Storage_DashboardController.php#L1955 (opens in a new tab)
- https://plugins.trac.wordpress.org/browser/6storage-rentals/tags/2.20.2/inc/Base/Six_Storage_DashboardController.php#L11 (opens in a new tab)
- https://plugins.trac.wordpress.org/browser/6storage-rentals/tags/2.20.2/inc/Base/Six_Storage_DashboardController.php#L995 (opens in a new tab)
- https://plugins.trac.wordpress.org/browser/6storage-rentals/tags/2.20.2/inc/Base/Six_Storage_DashboardController.php#L1931 (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)
- EUVD EUVD-2026-35307 (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://cveledger.app/cve/CVE-2026-9185)Record last updated .