- Fixed XSS vulnerabilities in ActionView helpers and ERB::Util, adding `ERB::Util.xml_name_escape` for XML‑compliant tag/attribute name escaping
- Renamed the `:escape_attributes` option to `:escape` to apply escaping to the whole tag
- Enabled the Content Security Policy DSL to generate CSP headers for API responses
6.1.5.1
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Active Storage disables libvips unfuzzed image loaders/savers, causing Vips::Error for BMP, ICO, PSD, SVG, JPEG XL, JPEG 2000, Netpbm and other formats – a breaking change for apps using those types
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