FKIE_CVE-2026-4330
Vulnerability from fkie_nvd - Published: 2026-04-08 08:16 - Updated: 2026-04-24 18:15
Severity ?
Summary
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.
References
Impacted products
| Vendor | Product | Version |
|---|
{
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "The Blog2Social: Social Media Auto Post \u0026 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\u0027s AJAX handlers failing to validate that the user-supplied \u0027b2s_id\u0027 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\u0027 scheduled social media posts."
}
],
"id": "CVE-2026-4330",
"lastModified": "2026-04-24T18:15:28.940",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 4.3,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "LOW",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N",
"version": "3.1"
},
"exploitabilityScore": 2.8,
"impactScore": 1.4,
"source": "security@wordfence.com",
"type": "Primary"
}
]
},
"published": "2026-04-08T08:16:23.733",
"references": [
{
"source": "security@wordfence.com",
"url": "https://plugins.trac.wordpress.org/browser/blog2social/tags/8.8.2/includes/Ajax/Post.php#L2178"
},
{
"source": "security@wordfence.com",
"url": "https://plugins.trac.wordpress.org/browser/blog2social/tags/8.8.2/includes/Ajax/Post.php#L2183"
},
{
"source": "security@wordfence.com",
"url": "https://plugins.trac.wordpress.org/browser/blog2social/tags/8.8.2/includes/Ajax/Post.php#L2273"
},
{
"source": "security@wordfence.com",
"url": "https://plugins.trac.wordpress.org/browser/blog2social/tags/8.8.2/includes/Ajax/Post.php#L2322"
},
{
"source": "security@wordfence.com",
"url": "https://plugins.trac.wordpress.org/browser/blog2social/tags/8.8.2/includes/B2S/Post/Tools.php#L32"
},
{
"source": "security@wordfence.com",
"url": "https://plugins.trac.wordpress.org/browser/blog2social/tags/8.8.2/includes/B2S/Ship/Save.php#L190"
},
{
"source": "security@wordfence.com",
"url": "https://plugins.trac.wordpress.org/browser/blog2social/tags/8.8.2/includes/Loader.php#L2202"
},
{
"source": "security@wordfence.com",
"url": "https://plugins.trac.wordpress.org/browser/blog2social/trunk/includes/Ajax/Post.php#L2178"
},
{
"source": "security@wordfence.com",
"url": "https://plugins.trac.wordpress.org/browser/blog2social/trunk/includes/Ajax/Post.php#L2183"
},
{
"source": "security@wordfence.com",
"url": "https://plugins.trac.wordpress.org/browser/blog2social/trunk/includes/Ajax/Post.php#L2273"
},
{
"source": "security@wordfence.com",
"url": "https://plugins.trac.wordpress.org/browser/blog2social/trunk/includes/Ajax/Post.php#L2322"
},
{
"source": "security@wordfence.com",
"url": "https://plugins.trac.wordpress.org/browser/blog2social/trunk/includes/B2S/Post/Tools.php#L32"
},
{
"source": "security@wordfence.com",
"url": "https://plugins.trac.wordpress.org/browser/blog2social/trunk/includes/B2S/Ship/Save.php#L190"
},
{
"source": "security@wordfence.com",
"url": "https://plugins.trac.wordpress.org/browser/blog2social/trunk/includes/Loader.php#L2202"
},
{
"source": "security@wordfence.com",
"url": "https://plugins.trac.wordpress.org/changeset/3494550/"
},
{
"source": "security@wordfence.com",
"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/f3eec9c6-fef9-4d6e-8328-51efb997c99c?source=cve"
}
],
"sourceIdentifier": "security@wordfence.com",
"vulnStatus": "Deferred",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-639"
}
],
"source": "security@wordfence.com",
"type": "Primary"
}
]
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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