# Flow-Flow Social Feed Stream <= 5.0.5 - Authenticated (Subscriber+) Missing Authorization to Subscription Settings Modification

- **ID:** WPSEC-2026-2937
- **Plugin:** Flow-Flow Social Feed & Social Wall (`flow-flow-social-streams`), https://wordpress.org/plugins/flow-flow-social-streams/
- **Affected versions:** all versions before 5.0.8
- **Fixed in:** 5.0.8 (Update to 5.0.8 or later.)
- **Severity:** Medium 4.3 (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N)
- **Weakness:** CWE-862
- **Usage among sites WPSec scans:** plugin Low, affected versions Low (as of 2026-11-12)
- **Attack surface analysis:** https://attacksurface.wpsec.com/plugin/flow-flow-social-streams
- **Fix released:** 2026-11-11
- **Published:** 2026-11-12
- **URL:** https://wpsec.com/vuln/WPSEC-2026-2937/

## Description

The Flow-Flow Social Feed & Social Wall plugin for WordPress is vulnerable to unauthorized modification of data via the flow_flow_payment_success, flow_flow_cancel_subscription and flow_flow_clear_subscription AJAX actions in all versions up to, and including, 5.0.5, due to missing capability checks and nonce verification on the paymentSuccess(), cancelSubscription() and clearSubscriptionCache() functions. This makes it possible for authenticated attackers with subscriber-level access and above to overwrite or delete the stored BOOSTS subscription email, checkout ID and token, and to unlink and disable boosted feeds.

## References

- https://wpsec.com/vuln/WPSEC-2026-2937/
- https://plugins.svn.wordpress.org/flow-flow-social-streams/tags/5.0.8/
- https://wordpress.org/plugins/flow-flow-social-streams/

Source: WPSec, https://wpsec.com/vuln/WPSEC-2026-2937/

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.