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

Severity: medium (CVSS 5.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-10-12 · updated 2026-10-18
Weakness: CWE-862

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

opensource-socialnetwork: through 10.1

References

https://github.com/opensource-socialnetwork/opensource-socialnetwork
https://github.com/opensource-socialnetwork/opensource-socialnetwork/blob/48b53f5b95488187715b2d5b5ae46a993267f83d/components/OssnPhotos/ossn_com.php#L481-L521
https://github.com/opensource-socialnetwork/opensource-socialnetwork/commit/cb7c24e70f8c4470ee485caac4889885d2e120b3
https://github.com/opensource-socialnetwork/opensource-socialnetwork/issues/2641
https://hackmd.io/@leediay/multiple-ossn-v10_vulnerable
https://www.vulncheck.com/advisories/open-source-social-network-ossn-through-10.1-missing-authorization-via-album-photo-routes

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