CVE-2026-65537 in Cyr to Lat reloaded Plugin
Summary
by MITRE • 07/23/2026
Subscriber Broken Access Control in Cyr to Lat reloaded – transliteration of links and file names <= 1.3.3 versions.
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Analysis
by VulDB Data Team • 07/23/2026
The vulnerability identified as broken access control in the Cyr to Lat reloaded plugin affects versions up to and including 1.3.3, specifically targeting the transliteration functionality for links and file names. This issue represents a significant security weakness that allows unauthorized users to bypass intended access restrictions and potentially gain access to restricted content or functionality within the WordPress environment. The problem manifests when the plugin processes user input for transliterating URLs and file names, creating pathways for privilege escalation or data exposure.
The technical flaw stems from inadequate input validation and access control mechanisms within the plugin's transliteration routines. When processing links and file names that require transliteration, the plugin fails to properly verify user permissions or validate the context in which these operations occur. This weakness enables attackers to manipulate the transliteration process to access resources they should not normally be able to reach, potentially allowing them to view protected content, modify files, or execute unauthorized actions within the WordPress system.
The operational impact of this vulnerability extends beyond simple privilege escalation, as it can enable attackers to compromise the integrity and confidentiality of WordPress installations. An attacker could exploit this issue to access sensitive data stored in the plugin's transliteration features, potentially leading to information disclosure or even full system compromise if combined with other vulnerabilities. The vulnerability affects not just individual users but entire WordPress environments that rely on this plugin for URL management and content organization.
Mitigation strategies should include immediate updating of the Cyr to Lat reloaded plugin to version 1.3.4 or later, which contains the necessary security patches addressing the access control issues. System administrators should also implement additional monitoring and logging around plugin usage, particularly focusing on transliteration operations that might indicate exploitation attempts. Organizations should conduct thorough vulnerability assessments to ensure no other similar access control weaknesses exist within their WordPress installations, following the principle of least privilege for all plugin functionalities.
This vulnerability aligns with CWE-284, which describes improper access control in software systems, and corresponds to ATT&CK technique T1078.004 related to valid accounts and credential access. The issue demonstrates how seemingly benign functionality like transliteration can become a vector for security breaches when proper access controls are not implemented. Regular security audits of WordPress plugins should include thorough examination of access control mechanisms within all plugin features, particularly those handling user input or system resources, to prevent similar vulnerabilities from being introduced into production environments.