# Blog2Social: Social Media Auto Post & Scheduler <= 9.1.4 - Authenticated (Contributor+) Insecure Direct Object Reference to Private and Draft Post Disclosure via 'postId' Parameter

- **ID:** WPSEC-2026-0835
- **Plugin:** Blog2Social: Social Media Auto Post & Scheduler (`blog2social`), https://wordpress.org/plugins/blog2social/
- **Affected versions:** all versions before 9.1.5
- **Fixed in:** 9.1.5 (Update to 9.1.5 or later.)
- **Severity:** Medium 4.3 (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N)
- **Weakness:** CWE-639
- **Usage among sites WPSec scans:** plugin Low, affected versions None seen (as of 2026-10-13)
- **Attack surface analysis:** https://attacksurface.wpsec.com/plugin/blog2social
- **Fix released:** 2026-10-12
- **Published:** 2026-10-13
- **URL:** https://wpsec.com/vuln/WPSEC-2026-0835/

## Description

The Blog2Social: Social Media Auto Post & Scheduler plugin for WordPress is vulnerable to Insecure Direct Object Reference via the 'postId' parameter of the b2s_ship_item and b2s_ship_item_reload_url AJAX actions in all versions up to, and including, 9.1.4, due to missing validation on a user-controlled key. The getShipItem() and getShipItemReloadUrl() functions check only the edit_posts capability and a nonce, and never check whether the current user may read the referenced post. This makes it possible for authenticated attackers, with contributor-level access and above, to retrieve the title, content excerpts and permalinks of private, draft or pending posts belonging to other users.

## References

- https://wpsec.com/vuln/WPSEC-2026-0835/
- https://plugins.svn.wordpress.org/blog2social/tags/9.1.5/
- https://wordpress.org/plugins/blog2social/

Source: WPSec, https://wpsec.com/vuln/WPSEC-2026-0835/

License: CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Free to use, share and adapt, also commercially, if you credit WPSec and link to this advisory.