HOMEVULNERABILITIESCVE-2026-6810
MEDIUM

CVE-2026-6810

CWE-639Published: April 24, 2026· Updated: Apr 24, 2026

5.3
CVSS v3.1
EPSS:0.01%probability of exploitation in 30 daysPercentile:1.9th

Official Description

The Booking Calendar Contact Form plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 1.2.63 via the dex_bccf_admin_int_calendar_list.inc.php file due to missing validation on a user controlled key. This makes it possible for authenticated attackers, with Subscriber-level access and above, to takeover other user's calendars and view user data associated with the calendar.

NVD Source

Technical Analysis

CVE-2026-6810 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.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityLow
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Affected Vendors & Products

Mentioned vendors (from description):
WordPressPHP
CPE data not yet available in NVD for this CVE.

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.

All References (8)

→
https://plugins.trac.wordpress.org/browser/booking-calendar-contact-form/tags/1.2.63/dex_bccf.php#L608
→
https://plugins.trac.wordpress.org/browser/booking-calendar-contact-form/tags/1.2.63/dex_bccf_admin_int_calendar_list.inc.php#L38
→
https://plugins.trac.wordpress.org/browser/booking-calendar-contact-form/tags/1.2.63/dex_bccf_admin_int_calendar_list.inc.php#L71
→
https://plugins.trac.wordpress.org/browser/booking-calendar-contact-form/trunk/dex_bccf.php#L608
→
https://plugins.trac.wordpress.org/browser/booking-calendar-contact-form/trunk/dex_bccf_admin_int_calendar_list.inc.php#L38
→
https://plugins.trac.wordpress.org/browser/booking-calendar-contact-form/trunk/dex_bccf_admin_int_calendar_list.inc.php#L71
→
https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3512197%40booking-calendar-contact-form&new=3512197%40booking-calendar-contact-form&sfp_email=&sfph_mail=
→
https://www.wordfence.com/threat-intel/vulnerabilities/id/a3977d10-239d-4b83-ab0c-ad165485498d?source=cve

Quick Facts

CVE IDCVE-2026-6810
CVSS Score5.3 / 10
SeverityMEDIUM
WeaknessCWE-639
CISA KEVNo
EPSS (30d)0.01%
PublishedApr 24, 2026

Related CVEs (CWE-639)

CVE-2026-55255
KEV9.9
CVE-2026-29200
9.9
CVE-2026-45552
9.9
CVE-2026-52782
9.9
CVE-2026-41267
9.8
CVE-2026-24178
9.8

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2026-6810 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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