WordPress 7.1.1 is a security and maintenance release addressing 11 security vulnerabilities across WordPress Core, themes, REST API functionality, XML-RPC, comments, and plugin management. The issues include stored cross-site scripting (XSS), authenticated path traversal, authorization weaknesses, arbitrary post overwrites, and information disclosure vulnerabilities. WordPress recommends updating affected installations immediately. One significant flaw involves stored XSS in the wpautop() function, where an unauthenticated visitor could submit malicious content through comments if the comment was subsequently approved. Another stored XSS issue affects themes supporting custom header images. WordPress also corrected an HTML API issue involving set_modifiable_text() that could allow content to escape an HTML comment. The release fixes an authenticated path traversal vulnerability in the WP REST Templates Controller, which could allow manipulation of file paths when insufficient validation is applied. Additional authorization issues include Contributor+ arbitrary post overwriting, unauthorized comment reparenting, XML-RPC abuse to bypass edit_css capability checks, and network activation of network-only plugins. WordPress also addressed disclosure of private parent-post titles and draft or pending post slugs.
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