PT-2026-34840 · Unknown · Ossn Open Source Social Network

Published 2026-04-24 · Updated 2026-04-25 · CVE-2026-41309

Positive Technologies (AI Summary)

CVSS v3.1

8.2

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H

Name of the Vulnerable Software and Affected Versions Open Source Social Network versions prior to 9.0

Description Resource exhaustion occurs when an attacker uploads a specially crafted image with extreme pixel dimensions. Although the compressed file size may be small, the server allocates excessive memory and CPU cycles during decompression and resizing, resulting in a Denial of Service (DoS) condition, which is a state where a system becomes unavailable to its intended users.

Recommendations Update to version 9.0. Adjust php.ini settings to strictly limit memory limit and max execution time. Implement client-side and server-side checks on image headers to reject files exceeding reasonable pixel dimensions before processing.

Fix

Resource Exhaustion

Allocation of Resources Without Limits

Weakness Enumeration

CWE-400

CWE-770

Related Identifiers

CVE-2026-41309

Affected Products

Ossn Open Source Social Network

References · 5

• https://nvd.nist.gov/vuln/detail/CVE-2026-41309 · Security Note
• https://github.com/opensource-socialnetwork/opensource-socialnetwork/security/advisories/GHSA-72qf-xrcw-fhr2 · Note
• https://github.com/opensource-socialnetwork/opensource-socialnetwork/commit/12357113b3be189da7f6e429979a464e4f982117 · Note
• https://github.com/opensource-socialnetwork/opensource-socialnetwork/issues/2535 · Note
• https://twitter.com/CVEnew/status/2048099329492087022 · Twitter Post