PatchSiren cyber security CVE debrief
CVE-2026-4330 pr-gateway CVE debrief
The Blog2Social: Social Media Auto Post & Scheduler plugin for WordPress is vulnerable to authorization bypass through user-controlled key in all versions up to, and including, 8.8.3. This is due to the plugin's AJAX handlers failing to validate that the user-supplied 'b2s_id' parameter belongs to the current user before performing UPDATE and DELETE operations. This makes it possible for authenticated attackers, with Subscriber-level access and above, to modify, reschedule, or delete other users' scheduled social media posts. The vulnerability has a CVSS score of 4.3 and is considered Medium priority.
- Vendor
- pr-gateway
- Product
- Blog2Social: Social Media Auto Post & Scheduler
- CVSS
- MEDIUM 4.3
- CISA KEV
- Not listed in stored evidence
- Original CVE published
- 2026-04-08
- Original CVE updated
- 2026-07-24
- Advisory published
- 2026-04-08
- Advisory updated
- 2026-07-24
Who should care
Authenticated attackers with Subscriber-level access and above may be able to modify, reschedule, or delete other users' scheduled social media posts. This vulnerability affects users of the Blog2Social plugin, particularly those with social media management responsibilities.
Technical summary
The Blog2Social plugin's AJAX handlers do not validate the 'b2s_id' parameter, allowing authenticated attackers with Subscriber-level access to modify or delete social media posts. The vulnerability affects all versions up to 8.8.3 and has a CVSS score of 4.3. This could enable attackers to alter or remove posts without proper authorization, potentially disrupting social media management. Evidence from the CVE record and NVD entry supports this vulnerability. Defenders should verify plugin versions and restrict access to AJAX handlers to mitigate this issue.
Defensive priority
Medium priority given the CVSS score of 4.3 and the potential impact on users' scheduled social media posts.
Recommended defensive actions
- Verify that the plugin version is up-to-date and consider updating to a patched version if available.
- Restrict access to the plugin's AJAX handlers to prevent unauthorized users from performing UPDATE and DELETE operations.
- Monitor user activity and scheduled social media posts for any suspicious modifications.
- Review compensating controls for exposed systems while remediation is scheduled and verified.
- Check relevant monitoring, detection, and logs for exposed assets that need extra review.
- Track exceptions, retest remediated assets, and close the item only after evidence is documented.
- Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up.
Evidence notes
The CVE record was published on 2026-04-08T08:16:23.733Z and was last modified on 2026-07-24T20:10:00.147Z. The NVD entry is currently Deferred. Evidence is limited to CVE and NVD information. Defenders should verify the CVE record and NVD entry for updates. The Blog2Social plugin's AJAX handlers fail to validate the 'b2s_id' parameter, allowing unauthorized modifications.
Official resources
AI-assisted PatchSiren debrief based on the supplied source corpus. The CVE record was published on 2026-04-08T08:16:23.733Z and has not been modified since then. The NVD entry is currently Deferred.