EUVD-2026-42784
GHSA-77ww-fvvh-5297
Severity by source
AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Unauthenticated attacker (PR:N) exploits a network CSRF but needs admin to click (UI:R); reliable string-literal breakout keeps AC:L, and RCE yields full C/I/A.
Primary rating from Vendor (Wordfence).
CVSS VectorVendor: Wordfence
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Lifecycle Timeline
2DescriptionCVE.org
The Salon Booking System - Free Version plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 10.30.32. This is due to missing or incorrect nonce validation on the setCustomText function. This makes it possible for unauthenticated attackers to inject arbitrary PHP code into the web-accessible translate-constants.php file within the plugin directory, enabling remote code execution on the server via a forged request granted they can trick a site administrator into performing an action such as clicking on a link. sanitize_text_field() is applied to the POST 'value' parameter but does not neutralize the characters - single quotes, parentheses, semicolons, $, and [] - required to break out of the PHP string literal into which the value is interpolated before being written to disk via file_put_contents().
AnalysisAI
Remote code execution in the Salon Booking System - Free Version WordPress plugin (all versions ≤ 10.30.32) lets a remote attacker write attacker-controlled PHP into the plugin's web-accessible translate-constants.php file by abusing the unprotected setCustomText AJAX handler. Because the handler lacks proper nonce validation (CWE-352 CSRF), an unauthenticated attacker who tricks a logged-in administrator into clicking a crafted link can achieve full server-side code execution. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires that a logged-in WordPress administrator (someone authorized to trigger the setCustomText AJAX action) be tricked into performing an action such as clicking an attacker-supplied link or visiting a malicious page while authenticated - this admin interaction is mandatory (CVSS UI:R) and is the primary limiting factor. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 vector (AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H = 8.8 High) accurately captures a network-reachable, low-complexity flaw with no attacker authentication (PR:N) but mandatory administrator interaction (UI:R) that yields full confidentiality, integrity, and availability loss via code execution. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker crafts a malicious web page or email link containing a hidden auto-submitting form that POSTs a setCustomText request with a 'value' payload engineered to break out of the PHP string literal (using quotes, parentheses, $ and semicolons). When a logged-in site administrator visits the page, their browser silently sends the forged request with valid session cookies, causing the plugin to write attacker PHP into translate-constants.php. … |
| Remediation | Upstream fix available (changeset 3600791 in the WordPress plugin SVN repository); a released patched version number is not independently confirmed from the provided data, so update to the latest available Salon Booking System - Free Version release above 10.30.32 and verify via the Wordfence advisory (https://www.wordfence.com/threat-intel/vulnerabilities/id/301ad19a-f99c-45c8-83a7-d74e1a260556) that the setCustomText handler now enforces nonce validation. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours: Inventory all WordPress instances running this plugin and immediately disable or remove it; search server logs from the past 30 days for requests to /wp-admin/admin-ajax.php with action=setCustomText. …
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External POC / Exploit Code
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