Astro: Arbitrary CSS injection in Astro View Transitions

Summary Astro's server-side View Transition CSS generator did not keep string animation properties within their generated CSS declarations. In an application that passes attacker-controlled data into an animation property such as duration, a value containing CSS delimiters could terminate the...

CVE-2026-114127 Astro: Arbitrary CSS injection in Astro View Transitions

Astro is a web framework for content-driven websites. From 7.1.0 until 7.3.3, Astro's server-side View Transition CSS generator does not keep string animation properties within their generated declarations. An application that passes attacker-controlled data into properties such as duration, dela...

CVE-2026-114127

The Astro web framework (versions 7.1.0 to 7.3.3 ) is vulnerable to arbitrary CSS injection within its server-side View Transition CSS generator. The root cause is the failure to keep string animation properties (such as duration , delay , easing , direction , fillMode , or animation names ) with...

CVE-2026-114127 Astro: Arbitrary CSS injection in Astro View Transitions

Astro is a web framework for content-driven websites. From 7.1.0 until 7.3.3, Astro's server-side View Transition CSS generator does not keep string animation properties within their generated declarations. An application that passes attacker-controlled data into properties such as duration, dela...

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...