new-api is vulnerable to SSRF Bypass

### Summary A recently patched SSRF vulnerability contains a bypass method that can bypass the existing security fix and still allow SSRF to occur. Because the existing fix only applies security restrictions to the first URL request, a 302 redirect can bypass existing security measures and successfully access the intranet. ### Details Use the following script to deploy on the attacker's server. Since ports 80, 443, and 8080 are default ports within the security range set by the administrator and will not be blocked, the service is deployed on port 8080. ``` from flask import Flask, redirect app = Flask(__name__) @app.route('/redirect') def ssrf_redirect(): return redirect('http://127.0.0.1:8003/uid.txt', code=302) if __name__ == '__main__': app.run(host='0.0.0.0', port=8080) ``` Then, a request is made to the malicious service opened by the attacker, and it can be found that the resources on the intranet are successfully accessed. <img width="663" height="60" alt="image" src="https://github.com/user-attachments/assets/2f296cff-510d-4cfe-8509-518e747bf8fe" /> At the same time, the locally opened service 127.0.0.1:8083/uid.txt also received related requests. <img width="717" height="79" alt="image" src="https://github.com/user-attachments/assets/d6b6d2cc-280b-45b5-9946-10b7891bf017" /> ### Impact Using 302 redirects to bypass previous SSRF security fixes

Source published

24 Nov 2025 20:05:21 UTC

Source modified

17 Dec 2025 00:59:03 UTC

Observed here

24 Oct 2026 13:19:41 UTC

Source terms

GitHub Advisory Database · CC-BY-4.0

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This view projects the publisher's source fields for reading; the original JSON retains additional fields and CVE enrichment containers. Attribution: osv · GitHub Advisory Database · CC-BY-4.0. Source text is retained; field grouping and change labels are provided by ChangeIntel.

CVSS_V3 · CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N

Publisher rating · HIGH