User Submitted Posts <= 20251121 - Unauthenticated Open Redirect
Strategic Overview
- Status
- Patched in 20251210
- Affected Version
<= 20251121- CVSS
- 5.3Medium
- Weakness type
- CWE-601 · URL Redirection to Untrusted Site ('Open Redirect')
- CVE
CVE-2025-68509
At a glance
CVE-2025-68509 is a medium-severity URL Redirection to Untrusted Site ('Open Redirect') vulnerability in the User Submitted Posts WordPress plugin, affecting versions <= 20251121. It carries a CVSS score of 5.3 (reachable over the network; low attack complexity). Exploitation requires no authentication. The issue is fixed in version 20251210; sites on affected versions should update now. Disclosed January 2026, reported by benzdeus.
Vulnerability Overview
The User Submitted Posts – Enable Users to Submit Posts from the Front End plugin for WordPress is vulnerable to Open Redirect in all versions up to, and including, 20251121. This is due to insufficient validation on the redirect url supplied parameter. This makes it possible for unauthenticated attackers to redirect users to potentially malicious sites if they can successfully trick them into performing an action.
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 privileges on the target site, and no interaction from a victim user.
CWE-601: URL Redirection to Untrusted Site ('Open Redirect')
Reaching this weakness in User Submitted Posts <= 20251121 takes no account at all. An open redirect is a page that takes a destination from the request and sends the browser there without checking that the destination belongs to the site.
A link that starts on a trusted domain finishes on an attacker's, which is what makes phishing and consent-screen abuse credible to the person clicking it. For User Submitted Posts the fix is 20251210: builds <= 20251121 are affected, anything from 20251210 onward is not.
Remediation
Update to version 20251210, or a newer patched version
How does WordSec protect against this?
Requests carrying this pattern arrive without a session, so nothing upstream of the firewall gets a chance to reject them: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: User Submitted Posts 20251210 closes this, and updating the plugin is the step that ends it.
- Firewall
- Login Security
- Alerts
External References
Related records
Other vulnerabilities in User Submitted Posts – Enable Users to Submit Posts from the Front End
- 9.8CVE-2023-45603: User Submitted Posts <= 20230902 Arbitrary File Upload
CVE-2023-45603 - 9.8CVE-2019-25138: User Submitted Posts <= 20190312 Arbitrary File Upload
CVE-2019-25138 - 7.2CVE-2026-0800: User Submitted Posts Stored XSS
CVE-2026-0800 - 7.2CVE-2023-4308: User Submitted Posts <= 20230809 Stored XSS
CVE-2023-4308 - 7.2CVE-2016-11001: User Submitted Posts < 20160215 Reflected XSS
CVE-2016-11001 - 6.4CVE-2026-0913: User Submitted Posts <= 20260110 Stored XSS
CVE-2026-0913 - 6.4CVE-2023-7251: User Submitted Posts <= 20230901 Stored XSS
CVE-2023-7251 - 6.4CVE-2023-4779: User Submitted Posts Stored XSS
CVE-2023-4779
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