PraisonAI has an SSRF bypass
Date: 2026-05
Affected: pip/praisonaiagents
Attack vector: ssrf
Category: vulnerability-disclosure
Severity: High
CVE: CVE-2026-44335
CWE: CWE-918
CVSS: 9.8 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)

### Summary The URL checking logic in PraisonAI has a logical flaw that could be bypassed by attackers, leading to SSRF attacks. ### Details The current PraisonAI project uses _validate_url to validate the input URL. The main logic is to perform security checks on the host portion of the URL extracted by urlparse to prevent SSRF attacks. <img width="1290" height="1145" alt="QQ20260424-151256-24-1" src="https://github.com/user-attachments/assets/d5f16b74-5ad2-444f-8600-b05f78a4b769" /> However, there are indeed differences in parsing between urlparse and the library that actually sends the request. Currently, almost all application scenarios in this project involve first using _validate_url for URL validation, and then using _get_session().get to send the request. <img width="1143" height="740" alt="QQ20260424-151437-24-2" src="https://github.com/user-attachments/assets/b1bf6ec2-d32a-4dac-b814-da819e8d3c83" /> In reality, its underlying mechanism is requests.get. <img width="1042" height="576" alt="QQ20260424-151645-24-3" src="https://github.com/user-attachments/assets/e17352c3-4205-44d6-ab6e-75566480215b" /> The core issue: `urlparse()` and `requests` disagree on which host a URL like `http://127.0.0.1:6666\@1.1.1.1` points to: - `urlparse()` treats `\` as a regular character and `@` as the userinfo-host delimiter, so it extracts hostname as `1.1.1.1` (public) - `requests` treats `\` as a path character, connecting to `127.0.0.1` (internal) Below is a test code I wro


Mitigations:

Architectural layers (MAESTRO):