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Critical SSRF Vulnerability Discovered in ClipBucket 5.5.2 Build #90

2 min readSource: Exploit Database

Security researchers identify a severe Server-Side Request Forgery (SSRF) flaw in ClipBucket 5.5.2 Build #90, enabling unauthorized internal network access.

Critical SSRF Flaw Exposed in ClipBucket 5.5.2 Build #90

Security researchers have uncovered a Server-Side Request Forgery (SSRF) vulnerability in ClipBucket 5.5.2 Build #90, a widely used open-source media hosting platform. The flaw, tracked under Exploit-DB ID 52434, allows attackers to manipulate server requests to access internal network resources, potentially leading to unauthorized data exposure or further exploitation.

Technical Details

The SSRF vulnerability resides in ClipBucket’s request handling mechanism, where insufficient input validation permits attackers to craft malicious HTTP requests. By exploiting this flaw, threat actors can:

  • Force the server to interact with internal systems (e.g., databases, APIs, or cloud services).
  • Bypass firewalls or network segmentation controls.
  • Conduct port scanning or internal reconnaissance.

The exploit does not require authentication, increasing the risk of widespread attacks. Security professionals are advised to review the proof-of-concept (PoC) exploit for technical analysis.

Impact Analysis

Successful exploitation of this SSRF flaw could result in:

  • Unauthorized internal network access, enabling lateral movement or privilege escalation.
  • Data exfiltration from restricted backend services.
  • Denial-of-service (DoS) conditions if internal systems are overwhelmed by malicious requests.

Organizations using ClipBucket 5.5.2 Build #90 in production environments are at heightened risk, particularly if the platform is exposed to the internet without proper mitigations.

Recommendations

To mitigate this vulnerability, security teams should:

  1. Upgrade Immediately: Apply the latest security patches or migrate to a patched version of ClipBucket if available.
  2. Implement Network Controls: Restrict outbound server requests to trusted endpoints using firewalls or web application firewalls (WAFs).
  3. Validate Inputs: Enforce strict input validation to prevent malicious URL or IP address injection.
  4. Monitor Traffic: Deploy intrusion detection systems (IDS) to detect anomalous internal requests.

For further details, refer to the original exploit disclosure.

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