Missing Authorization Vulnerability in Open Source Social Network by Open Source Social Network
CVE-2026-108950

6.9MEDIUM

Key Information:

Vendor

Opensource-socialnetwork

Status
Opensource-socialnetwork
Vendor
CVE Published:
12 October 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-108950?

The Open Source Social Network (OSSN) version 10.1 has a vulnerability due to missing authorization in the ossn_album_page_handler function. This flaw allows unauthenticated attackers to download files via the routes album/getphoto and album/getcover. By sequentially enumerating file GUIDs, attackers can access friends-only album photos and other stored files, bypassing necessary access checks, which can lead to unauthorized data exposure.

Affected Version(s)

opensource-socialnetwork 0 <= 10.1

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-108950 - Proof of Concept

References

https://github.com/opensource-socialnetwork/opensource-so...
issue-tracking
https://github.com/opensource-socialnetwork/opensource-so...
patch
https://hackmd.io/@leediay/multiple-ossn-v10_vulnerable
exploittechnical-description

CVSS V4

Score:
6.9
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

leediay153 from Viettel Post
.