Image Slider Slideshow <= 1.8 - Authenticated (Contributor+) Insecure Direct Object Reference
Strategic Overview
- Status
- Unpatched
- Affected Plugin
- Image Slider Slideshow
- Affected Version
<= 1.8- CVSS
- 4.3Medium
- Weakness type
- CWE-639 · Authorization Bypass Through User-Controlled Key
- CVE
CVE-2026-22489
At a glance
CVE-2026-22489 is a medium-severity Authorization Bypass Through User-Controlled Key vulnerability in the Image Slider Slideshow WordPress plugin, affecting versions <= 1.8. It carries a CVSS score of 4.3 (reachable over the network; low attack complexity). Exploitation requires an authenticated account at Contributor level or above. No fixed release has been reported yet; treat installations running this software as exposed. Disclosed January 2026, reported by Nabil Irawan.
Vulnerability Overview
The Image Slider Slideshow plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 1.8 due to missing validation on a user controlled key. This makes it possible for authenticated attackers, with Contributor-level access and above, to perform unauthorized access.
Technical Analysis
The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed, and no interaction from a victim user.
CWE-639: Authorization Bypass Through User-Controlled Key
Reaching this weakness in Image Slider Slideshow <= 1.8 takes an account at Contributor level or above. Authorization bypass through a user-controlled key, often called insecure direct object reference, means the application looks up a record by an identifier from the request without checking that the caller owns it.
Changing a number in the request is enough to read or modify other users' records, which on commerce and membership sites means customer data. No fixed build of this plugin is recorded for Image Slider Slideshow yet, so installs running <= 1.8 stay exposed until the vendor ships one.
Remediation
No known patch available. Please review the vulnerability's details in depth and employ mitigations based on your organization's risk tolerance. It may be best to uninstall the affected software and find a replacement.
How does WordSec protect against this?
Because it turns on account access, WordSec's login security is the relevant layer: role-based two-factor, captcha and brute-force limits raise the cost of getting the account this needs. No patched version is recorded yet, which is the case where a filtering layer matters most, because there is nothing to update to.
- Login Security
- Alerts
External References
Vulnerability data © Defiant, Inc., provided under the Wordfence Intelligence T&C