WordPress released version 7.1.3 on October 6, patching seven core security vulnerabilities and four bugs. Notably, AI firm Anthropic reported three flaws, highlighting cross-industry security collaboration. Critical issues include a stored XSS in comment management by Trail of Bits, a delayed-trigger backdoor in the WXR exporter, a denial-of-service vulnerability in WP_Http, and an access control flaw allowing unauthorized sticky posts. The update underscores diverse external contributions to platform security, with most vulnerabilities identified by third-party researchers rather than internal teams.