CVE-2026-108477: Booktics Auth Bypass Vulnerability

CVE-2026-108477 Overview

CVE-2026-108477 is a Missing Authorization vulnerability [CWE-862] in the Arraytics Booktics WordPress plugin. The flaw affects all versions of Booktics up to and including 1.0.28. It stems from incorrectly configured access control security levels, allowing unauthenticated network-based attackers to interact with functionality that should require authorization. Successful exploitation can lead to limited integrity impact on affected WordPress sites running the plugin. The vulnerability requires no user interaction and no privileges, which lowers the barrier for exploitation attempts against exposed sites.

Critical Impact

An unauthenticated attacker can reach protected plugin functionality over the network, causing low-level integrity impact to WordPress sites running Booktics through version 1.0.28.

Affected Products

• Arraytics Booktics WordPress plugin — all versions through 1.0.28

Discovery Timeline

• 2026-10-12 - CVE-2026-108477 published to NVD
• 2026-10-13 - Last updated in NVD database

Technical Details for CVE-2026-108477

Vulnerability Analysis

The Booktics plugin exposes functionality without properly validating whether the requesting user is authorized to access it. This is a classic Broken Access Control weakness categorized as [CWE-862] Missing Authorization. The plugin fails to enforce capability checks or nonce validation on sensitive endpoints, enabling unauthenticated callers to invoke actions that should be gated behind administrative or user-level permissions. Impact is limited to integrity, with no direct confidentiality or availability loss documented. The weakness affects the plugin from its earliest tracked release through version 1.0.28.

Root Cause

The root cause is the absence of authorization checks on one or more plugin handlers. In WordPress plugins, these checks typically take the form of current_user_can() capability verification and check_admin_referer() or wp_verify_nonce() calls. When these guards are missing, any HTTP client reaching the endpoint can trigger the underlying business logic regardless of identity or role.

Attack Vector

Exploitation occurs over the network against any WordPress site running a vulnerable Booktics version. The attacker sends a crafted HTTP request directly to the exposed plugin endpoint. No credentials, session, or user interaction are required. Because WordPress plugin endpoints are typically reachable through admin-ajax.php or the REST API, the attack surface is any publicly accessible site. See the PatchStack Vulnerability Report for additional technical context.

No verified proof-of-concept code is published for this CVE. Refer to the PatchStack advisory for implementation-specific details on the affected endpoints.

Detection Methods for CVE-2026-108477

Indicators of Compromise

• Unauthenticated HTTP requests to Booktics plugin endpoints under /wp-admin/admin-ajax.php or /wp-json/ paths containing booktics action handlers.
• Unexpected modifications to Booktics-managed data such as booking records, settings, or configuration options.
• Access log entries showing POST requests to plugin endpoints from unauthenticated sessions.

Detection Strategies

• Inventory all WordPress sites and identify installations of the Arraytics Booktics plugin at version 1.0.28 or earlier.
• Enable WordPress audit logging to capture plugin action invocations and compare against expected user sessions.
• Deploy a Web Application Firewall rule set that flags unauthenticated access to plugin administrative actions.

Monitoring Recommendations

• Monitor web server logs for anomalous request patterns targeting Booktics endpoints, particularly from external IPs.
• Alert on changes to Booktics database tables outside of authenticated administrative sessions.
• Correlate plugin update events with release notes to ensure the fixed version is deployed across the environment.

How to Mitigate CVE-2026-108477

Immediate Actions Required

• Identify every WordPress installation running Arraytics Booktics and confirm the installed version.
• Update Booktics to a version newer than 1.0.28 once the vendor publishes a patched release.
• Restrict access to WordPress administrative endpoints using IP allowlisting or authenticated-only access where feasible.
• Review audit logs for signs of unauthorized interaction with Booktics endpoints prior to patching.

Patch Information

The vulnerability affects Booktics through version 1.0.28. Site administrators should consult the PatchStack Vulnerability Report and the plugin vendor's release channel for the fixed version and apply it as soon as available.

Workarounds

• Temporarily disable the Booktics plugin if the fixed version is not yet available and the functionality is not business-critical.
• Place a Web Application Firewall in front of the WordPress site to block unauthenticated requests to Booktics action endpoints.
• Limit access to /wp-admin/admin-ajax.php and /wp-json/ paths at the network edge for untrusted sources.

# Example WAF rule concept to block unauthenticated Booktics endpoint access
# Adapt to your WAF syntax (ModSecurity, Cloudflare, AWS WAF, etc.)
SecRule REQUEST_URI "@rx /wp-admin/admin-ajax\.php" \
  "chain,phase:2,deny,status:403,id:1008477,msg:'Block unauthenticated Booktics action'"
SecRule ARGS:action "@rx ^booktics_" \
  "chain"
SecRule &REQUEST_COOKIES:/wordpress_logged_in_/ "@eq 0"