CVE-2025-30834: Bit Assist Path Traversal Vulnerability

CVE-2025-30834 Overview

CVE-2025-30834 is a path traversal vulnerability affecting the Bit Apps Bit Assist WordPress plugin. The flaw exists in versions up to and including 1.5.4 and is tracked under [CWE-35: Path Traversal: '.../...//']. Attackers can exploit the issue remotely over the network without authentication or user interaction. The vulnerability allows manipulation of file paths through crafted input containing traversal sequences such as .../...//, which can bypass naive sanitization routines that only strip a single ../ pattern. Successful exploitation impacts data integrity on the target WordPress installation.

Critical Impact
Unauthenticated remote attackers can traverse the filesystem of WordPress sites running Bit Assist <= 1.5.4, enabling unauthorized file manipulation against site integrity.

Affected Products

Bit Apps Bit Assist (bit-assist) WordPress plugin
All versions from initial release through 1.5.4
WordPress sites with the vulnerable plugin installed and activated

Discovery Timeline

2025-04-01 - CVE-2025-30834 published to the National Vulnerability Database
2026-04-23 - Last updated in NVD database

Technical Details for CVE-2025-30834

Vulnerability Analysis

The vulnerability stems from improper neutralization of path traversal sequences in user-controlled input processed by the Bit Assist plugin. The plugin fails to canonicalize file paths before performing filesystem operations. Attackers submit requests containing the .../...// pattern, which evades sanitizers that recursively strip ../ substrings. When the sanitizer removes the inner ../, the remaining characters reassemble into a valid traversal sequence. This allows the request to reference files outside the intended directory scope.

The CWE-35 classification indicates the flaw specifically involves the .../...// traversal variant rather than basic ../ sequences. The vulnerability impacts integrity but not confidentiality or availability based on the published CVSS vector. This pattern typically corresponds to file write, move, or delete operations rather than arbitrary file read.

Root Cause

The root cause is insufficient input validation on file path parameters within the plugin. Sanitization logic in Bit Assist does not perform recursive or canonical path resolution. The plugin trusts processed input after a single-pass filter, which leaves nested traversal patterns intact after one removal cycle.

Attack Vector

The attack vector is network-based with no authentication and no user interaction required. An attacker sends a crafted HTTP request to a vulnerable WordPress endpoint exposed by the Bit Assist plugin. The request includes a parameter containing the .../...// sequence pointing to a target path outside the plugin's expected directory. The server processes the path, executes the intended filesystem operation, and the integrity of files outside the trusted scope is compromised.

No verified public proof-of-concept code is available at the time of writing. Refer to the Patchstack Vulnerability Report for additional technical context.

Detection Methods for CVE-2025-30834

Indicators of Compromise

HTTP requests to /wp-admin/admin-ajax.php or Bit Assist REST endpoints containing the string .../...// in parameters or request bodies
Unexpected file modifications, creations, or deletions in WordPress directories outside wp-content/plugins/bit-assist/
Web server access logs showing traversal patterns combined with the bit-assist action or nonce parameters

Detection Strategies

Inspect web server and WordPress audit logs for requests containing encoded or literal .../...//, ....//, or stacked ../ sequences targeting plugin endpoints
Deploy web application firewall (WAF) rules that decode and canonicalize path parameters before matching against traversal signatures
Monitor filesystem integrity on WordPress installations for changes to files outside the active plugin's directory tree

Monitoring Recommendations

Enable verbose logging for WordPress AJAX and REST API endpoints exposed by Bit Assist
Alert on HTTP 200 responses to requests containing traversal patterns, which indicate successful processing
Track plugin version inventory across WordPress estates to identify hosts still running Bit Assist <= 1.5.4

How to Mitigate CVE-2025-30834

Immediate Actions Required

Identify all WordPress sites running the Bit Apps Bit Assist plugin and confirm the installed version
Upgrade Bit Assist to a release later than 1.5.4 once the vendor publishes a patched version
If no patched version is available, deactivate and remove the plugin from production WordPress installations

Patch Information

The vulnerability affects Bit Assist versions through 1.5.4. Site administrators should consult the Patchstack Vulnerability Report for the latest fixed version and apply the update through the WordPress plugin manager.

Workarounds

Deactivate the Bit Assist plugin until a vendor patch is applied
Configure a WAF or reverse proxy to block requests containing .../...//, ....//, or URL-encoded variants such as %2e%2e%2f targeting bit-assist endpoints
Restrict filesystem permissions on the WordPress installation so the web server process cannot modify files outside required directories

bash

# Example ModSecurity rule to block .../...// traversal patterns
SecRule REQUEST_URI|ARGS|REQUEST_BODY "@rx \.{3,}/+\.{2,}/+" \
    "id:1003834,phase:2,deny,status:403,\
    msg:'CVE-2025-30834 Bit Assist path traversal attempt',\
    t:none,t:urlDecodeUni,t:lowercase"