Vulnerability · Published Oct 12, 2026 · Assigned by VulnCheck

CVE-2026-108950Open Source Social Network (OSSN) through 10.1 Missing Authorization via Album Photo Routes

Medium 5.3

In plain English

A medium-severity missing authorization in opensource-socialnetwork from opensource-socialnetwork. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 26% of all known vulnerabilities).

Severity (CVSS 3.1)5.3Medium

Exploit odds (30 days)0.3%top 74.2% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

Open Source Social Network (OSSN) through 10.1 contains a missing authorization vulnerability in ossn_album_page_handler that allows unauthenticated attackers to download files via album/getphoto and album/getcover. Attackers can enumerate sequential file GUIDs to retrieve friends-only album photos and other stored files without any access check.

Affected products (as reported)

Vendor	Product	Versions
opensource-socialnetwork	opensource-socialnetwork	0 – through 10.1

Weakness: CWE-862 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

References

https://github.com/opensource-socialnetwork/opensource-socialnetwork/issues/2641 issue-tracking
https://github.com/opensource-socialnetwork/opensource-socialnetwork/commit/cb7c24e70f8c4470ee485caac4889885d2e120b3 patch
https://hackmd.io/@leediay/multiple-ossn-v10_vulnerable exploit, technical-description
https://github.com/opensource-socialnetwork/opensource-socialnetwork/blob/48b53f5b95488187715b2d5b5ae46a993267f83d/components/OssnPhotos/ossn_com.php#L481-L521 technical-description
https://github.com/opensource-socialnetwork/opensource-socialnetwork product
VulnCheck Advisory: Open Source Social Network (OSSN) through 10.1 Missing Authorization via Album Photo Routes third-party-advisory