EUVD-2026-37666Severity by source
AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Network-reachable plugin endpoint with no auth or user interaction (AV:N/PR:N/UI:N); AC:H reflects required victim enumeration or sequencing; full account takeover yields C:H/I:H/A:H.
Primary rating from Vendor (Patchstack).
CVSS VectorVendor: Patchstack
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Lifecycle Timeline
1DescriptionCVE.org
Unauthenticated Broken Authentication in Booknetic <= 4.8.5 versions.
AnalysisAI
Account takeover in Booknetic WordPress appointment booking plugin versions 4.8.5 and earlier allows remote unauthenticated attackers to bypass authentication controls and gain access to arbitrary user accounts. The Patchstack advisory characterizes this as a broken authentication weakness (CWE-288) with high impact across confidentiality, integrity, and availability. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | The target WordPress site must have the Booknetic plugin installed and active at version 4.8.5 or earlier, with the Booknetic-managed authentication or customer-account workflow reachable from the network (typical for a public booking site). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | CVSS 3.1 base score is 8.1 (High) driven by network vector, no privileges, no user interaction, and high CIA impact - but with AC:H reflecting non-trivial preconditions (timing, guessing, or chaining required). … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | A remote unauthenticated attacker targets a WordPress site running Booknetic ≤ 4.8.5 and sends a crafted request to the plugin's authentication-handling endpoint that exercises the alternate authentication path missing proper identity validation, returning a session or account context for a victim user. From the hijacked account the attacker can read the victim's appointment, contact and payment-related data and modify or cancel bookings, with high integrity and availability impact on that account. … |
| Remediation | Upstream fix available per Patchstack advisory; a specific released patched version is not independently confirmed in the provided data, so administrators should consult https://patchstack.com/database/wordpress/plugin/booknetic/vulnerability/wordpress-booknetic-plugin-4-8-5-account-takeover-vulnerability and the FS-Code Booknetic changelog for the exact post-4.8.5 release that contains the fix, then upgrade through the WordPress plugin updater. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours: Conduct inventory of all WordPress installations running Booknetic and confirm version numbers to identify affected systems. …
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External POC / Exploit Code
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