CVE-2024-2822 Overview
CVE-2024-2822 is a Cross-Site Request Forgery (CSRF) vulnerability in DedeCMS 5.7, a widely used PHP-based content management system. The flaw resides in the /src/dede/vote_edit.php file, where manipulation of the aid parameter allows an attacker to trigger unauthorized state-changing actions on behalf of an authenticated administrator. The vulnerability is classified under CWE-352: Cross-Site Request Forgery and can be exploited remotely with user interaction. The exploit has been publicly disclosed. According to the advisory, the vendor was contacted about the issue but did not respond.
Critical Impact
Remote attackers can trick authenticated DedeCMS administrators into performing unintended modifications to poll (vote) records by visiting an attacker-controlled page.
Affected Products
- DedeCMS 5.7
- DedeCMS administrative interface (/src/dede/vote_edit.php)
- Deployments exposing the DedeCMS admin panel to authenticated administrators browsing untrusted content
Discovery Timeline
- 2024-03-22 - CVE-2024-2822 published to the National Vulnerability Database (NVD)
- 2026-06-17 - Last updated in NVD database
Technical Details for CVE-2024-2822
Vulnerability Analysis
The vulnerability affects the vote_edit.php administrative script in DedeCMS 5.7. This endpoint permits administrators to edit poll (vote) entries identified by the aid parameter. The script processes state-changing requests without validating an anti-CSRF token or verifying the request origin. As a result, any authenticated administrator visiting a malicious page can be coerced into submitting a forged request to the DedeCMS backend.
Because the vulnerable action requires user interaction, exploitation typically involves social engineering. An attacker crafts a webpage or email that triggers a request to the target DedeCMS instance while the victim holds an active administrator session. The impact is limited to integrity of poll data rather than direct code execution or credential theft, which is reflected in the assigned severity.
Root Cause
The root cause is the absence of a synchronizer token, origin verification, or SameSite cookie enforcement on the vote_edit.php handler. The script trusts the presence of a valid administrator session cookie as sufficient authorization and does not distinguish between requests initiated by the administrator and requests initiated by third-party sites.
Attack Vector
Exploitation follows the standard CSRF pattern. An attacker hosts a page containing an auto-submitting HTML form or an image tag that issues a GET or POST request to the DedeCMS vote_edit.php endpoint with a chosen aid value and modified fields. When an authenticated administrator loads the malicious page, the browser attaches the session cookie and the DedeCMS server executes the modification. Public proof-of-concept material referenced by the advisory is available in the GitHub demo document and the VulDB entry.
No verified exploit code is included here. See the referenced advisories for technical details.
Detection Methods for CVE-2024-2822
Indicators of Compromise
- Requests to /src/dede/vote_edit.php where the HTTP Referer or Origin header points to a domain outside the DedeCMS installation.
- Unexpected modifications to vote/poll records in the DedeCMS database without corresponding audit entries from administrator sessions.
- Administrator-session requests to vote_edit.php originating from unusual client IP addresses or user-agent strings.
Detection Strategies
- Inspect web server access logs for POST or GET requests to vote_edit.php and correlate the Referer header against the trusted admin origin.
- Enable database change auditing on the DedeCMS vote tables to identify unauthorized edits tied to administrator accounts.
- Deploy a Web Application Firewall (WAF) rule that blocks state-changing requests to /src/dede/* endpoints lacking a valid CSRF token or matching Origin header.
Monitoring Recommendations
- Alert on any administrator activity to vote_edit.php outside normal working hours or from geographies not associated with staff.
- Baseline the volume of edits to poll records and trigger notifications on spikes that could indicate scripted CSRF exploitation.
- Forward web and application logs to a centralized analytics platform so cross-origin request patterns can be correlated with browser telemetry.
How to Mitigate CVE-2024-2822
Immediate Actions Required
- Restrict access to the DedeCMS /src/dede/ administrative directory via IP allow-lists or VPN so untrusted browsers cannot reach vote_edit.php directly.
- Instruct administrators to log out of DedeCMS when not actively managing the site and to avoid browsing untrusted content in the same browser profile.
- Deploy WAF rules that reject requests to admin endpoints without a matching Origin or Referer header.
Patch Information
No vendor patch is currently referenced in the NVD entry. According to the advisory, the DedeCMS maintainers were notified before public disclosure but did not respond. Operators should monitor the VulDB advisory and the DedeCMS project for updates and apply any subsequent official fix as soon as it becomes available.
Workarounds
- Add server-side checks that validate a per-session CSRF token on all vote_edit.php submissions, rejecting requests without a matching token.
- Configure the DedeCMS session cookie with SameSite=Strict and Secure attributes to prevent cross-site cookie transmission.
- Place the administrative interface behind an authenticated reverse proxy that enforces Origin header validation for state-changing HTTP methods.
- Disable the poll/vote module if it is not required for site operations, reducing the exposed attack surface.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.