HOMEVULNERABILITIESCVE-2023-2834
CRITICAL

CVE-2023-2834

CWE-288Published: June 30, 2023· Updated: Jun 17, 2026

9.8
CVSS v3.1

Official Description

The BookIt plugin for WordPress is vulnerable to authentication bypass in versions up to, and including, 2.3.7. This is due to insufficient verification on the user being supplied during booking an appointment through the plugin. This makes it possible for unauthenticated attackers to log in as any existing user on the site, such as an administrator, if they have access to the email.

NVD Source

Technical Analysis

CVE-2023-2834 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Vendors & Products

stylemixthemes1 product(s)
bookit
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttps://plugins.trac.wordpress.org/browser/bookit/tags/2.3.6/includes/classes/CustomerController.php#L27
PATCHhttps://plugins.trac.wordpress.org/browser/bookit/tags/2.3.6/includes/classes/database/Customers.php#L63
PATCHhttps://plugins.trac.wordpress.org/changeset/2919529/bookit
PATCHhttps://plugins.trac.wordpress.org/changeset/2925153/bookit
PATCHhttps://plugins.trac.wordpress.org/browser/bookit/tags/2.3.6/includes/classes/CustomerController.php#L27
PATCHhttps://plugins.trac.wordpress.org/browser/bookit/tags/2.3.6/includes/classes/database/Customers.php#L63
PATCHhttps://plugins.trac.wordpress.org/changeset/2919529/bookit
PATCHhttps://plugins.trac.wordpress.org/changeset/2925153/bookit
ADVISORYhttps://lana.codes/lanavdb/0dea1346-fd60-4338-8af6-6f89c29075d4/
ADVISORYhttps://www.wordfence.com/blog/2023/06/stylemixthemes-addresses-authentication-bypass-vulnerability-in-bookit-wordpress-plugin/
ADVISORYhttps://www.wordfence.com/threat-intel/vulnerabilities/id/cfd32e46-a4fc-4c10-b546-9f9da75db791?source=cve
ADVISORYhttps://lana.codes/lanavdb/0dea1346-fd60-4338-8af6-6f89c29075d4/
ADVISORYhttps://www.wordfence.com/blog/2023/06/stylemixthemes-addresses-authentication-bypass-vulnerability-in-bookit-wordpress-plugin/
ADVISORYhttps://www.wordfence.com/threat-intel/vulnerabilities/id/cfd32e46-a4fc-4c10-b546-9f9da75db791?source=cve

All References (14)

→
https://lana.codes/lanavdb/0dea1346-fd60-4338-8af6-6f89c29075d4/Exploit · Third Party Advisory
→
https://plugins.trac.wordpress.org/browser/bookit/tags/2.3.6/includes/classes/CustomerController.php#L27Patch
→
https://plugins.trac.wordpress.org/browser/bookit/tags/2.3.6/includes/classes/database/Customers.php#L63Patch
→
https://plugins.trac.wordpress.org/changeset/2919529/bookitPatch
→
https://plugins.trac.wordpress.org/changeset/2925153/bookitPatch
→
https://www.wordfence.com/blog/2023/06/stylemixthemes-addresses-authentication-bypass-vulnerability-in-bookit-wordpress-plugin/Exploit · Third Party Advisory
→
https://www.wordfence.com/threat-intel/vulnerabilities/id/cfd32e46-a4fc-4c10-b546-9f9da75db791?source=cveThird Party Advisory
→
https://lana.codes/lanavdb/0dea1346-fd60-4338-8af6-6f89c29075d4/Exploit · Third Party Advisory
→
https://plugins.trac.wordpress.org/browser/bookit/tags/2.3.6/includes/classes/CustomerController.php#L27Patch
→
https://plugins.trac.wordpress.org/browser/bookit/tags/2.3.6/includes/classes/database/Customers.php#L63Patch
→
https://plugins.trac.wordpress.org/changeset/2919529/bookitPatch
→
https://plugins.trac.wordpress.org/changeset/2925153/bookitPatch
→
https://www.wordfence.com/blog/2023/06/stylemixthemes-addresses-authentication-bypass-vulnerability-in-bookit-wordpress-plugin/Exploit · Third Party Advisory
→
https://www.wordfence.com/threat-intel/vulnerabilities/id/cfd32e46-a4fc-4c10-b546-9f9da75db791?source=cveThird Party Advisory

Quick Facts

CVE IDCVE-2023-2834
CVSS Score9.8 / 10
SeverityCRITICAL
WeaknessCWE-288
CISA KEVNo
Affected1 vendor(s)
PublishedJun 30, 2023

Related CVEs (CWE-288)

CVE-2026-53622
10.0
CVE-2026-20079
10.0
CVE-2024-2013
10.0
CVE-2024-2973
10.0
CVE-2026-48020
10.0
CVE-2026-48491
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2023-2834 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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