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External Guest without permission Can View pinned-collections Lists



Published il y a 1 semaine

image de External Guest without permission Can View pinned-collections Lists

Hi, This is DevSecure Team ,we specialize in uncovering hidden vulnerabilities that pose real-world risks to modern web applications.
All vulnerabilities shared in these write-ups are fully redacted — any company names, domains, or sensitive details are replaced with placeholders such as company.com. Each finding was responsibly disclosed through the Intigriti platform and has been verified and resolved by the affected vendor.

Every post represents our commitment to ethical hacking, responsible disclosure, and continuous learning, helping organizations strengthen their defenses while contributing to a safer global cybersecurity ecosystem.

Description:

External Guest without permission Can View pinned-collections Lists

Affected Parameter / Endpoint: https://api.company.com/api/pinned-collections

Proof of Concept:

Step-by-step to reproduce:
  • Step 1: login with owner user role click on invite user chose external ( Guest ) from there you can read "Guests can only read, upload, and download documents in projects which they are invited to".
  • Step 2: get your jwt token for the invited guest user with post request include guest credentials to

    https://api.company.com/auth/token
  • Step 3: you can view all pinned-collections in this company from this endpoint make sure you have some pinned collections in the company with GET request https://api.company.com/api/pinned-collections

Impact:

unauthorized access to users pinned collections

Severity:

Medium — unauthorized access.

  • Timeline :
  • Platform : Intigriti
  • Reported: 24/11/2022
  • Triaged: 25/11/2022
  • Accepted & paid: 28/11/2022
  • Bounty: €150

https://app.intigriti.com/profile/merroun

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