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GHSA-496g-mmpw-j9x3
No affected components available
Summary
After adding private posts (followers, direct) that you do not have permission to view to your favorites or clips, you can export them to view the contents of the private posts.
PoC
- Create an account (X) for testing and an account (Y) for private posts on the same server.
- Send appropriate content from Y using "Follow"
- Send appropriate content to any user using "Nominate" from Y
- Obtain the URLs for the two posts above using Y's account.
- Query the URLs for the two posts using X and add them to your favorites or clips.
- Export your favorites or clips using X.
- Check the exported data.
Note: Verified in v2025.11.1
Impact
This could allow an attacker to view the contents of private posts. If you have pinned private posts, this could be a real problem, as the ID of the private post can be obtained by viewing the user page on the original server.
The vulnerability can be exploited over the network without needing physical access. It is easy for an attacker to exploit this vulnerability. An attacker needs basic access or low-level privileges. No user interaction is needed for the attacker to exploit this vulnerability. The impact is confined to the system where the vulnerability exists. There is a high impact on the confidentiality of the information.
Exploitation attempts have been detected. Elevated vigilance and prompt remediation are advised.
The exploit probability is very low. The vulnerability is unlikely to be exploited in the next 30 days.
We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.
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