CVE-2026-73422

CVE-2026-73422 (Astro) : From 2.9.0 through 7.1.0, Astro’s server-side View Transition CSS generator serializes animation properties into an inline style element without escaping for CSS/HTML contexts. An attacker-controlled value (e.g., duration) can terminate the style element and inject arbitr...

PT-2026-66638

Summary Astro's server-side View Transition CSS generator interpolates animation properties into an inline element without escaping them for the CSS and HTML contexts. An attacker-controlled value passed to an animation property such as duration can contain a sequence, terminate the generated sty...