Reference page — cumulative record through Monday, October 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
CVE-2026-108164
opensource-socialnetwork opensource-socialnetwork — Open Source Social Network (OSSN) through 10.1 IDOR via Message Attachment Route
AV AC AT PR UI VC VI VA CVSS EPSS %ile KEV
N L N L N H N N 7.1 .0026 16.2 —
AFFECTED
Product Versions Fixed
opensource-socialnetwork unspecified —
TIMELINE
Oct 9 Reserved by VulnCheck
Oct 10 Published (CNA: VulnCheck)
Oct 13 EXPLOIT PUBLISHED — CVE-2026-108164 (opensource-socialnetwork). Public exploit reference added.
Description
Open Source Social Network (OSSN) through 10.1 contains an insecure direct object reference vulnerability in components/OssnMessages/ossn_com.php that allows authenticated users to read other users' private message attachments. Attackers can request the /messages/attachment/{guid} route with sequential or guessed file GUIDs to retrieve attachments from private conversations without sender or recipient verification.
Lifecycle
Complete event history — 3 events, chronological
| Date | Event | Detail |
|---|
| October 9, 2026 | Reserved | Reserved by VulnCheck |
| October 10, 2026 | Published | Published (CNA: VulnCheck) |
| October 13, 2026 | EXPLOIT PUBLISHED | EXPLOIT PUBLISHED — CVE-2026-108164 (opensource-socialnetwork). Public exploit reference added. |
Affected
Affected products and packages — 1 row
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
|---|
| opensource-socialnetwork | opensource-socialnetwork | — | — | — |
About this page
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-108164 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Monday, October 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.
