EUVD-2026-107409

Astro: Arbitrary CSS injection in Astro View Transitions...

CVE-2026-114127

A flaw was found in Astro. Its server-side View Transition stylesheet generator fails to properly sanitize animation properties when creating transition styles. A remote attacker able to supply input to these properties can inject arbitrary Cascading Style Sheets CSS rules into server-rendered we...

CVE-2026-114127

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

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...

PT-2026-120730

Name of the Vulnerable Software and Affected Versions Astro versions 7.1.0 through 7.3.2 Description The server-side View Transition CSS generator fails to maintain string animation properties within generated declarations. When an application passes attacker-controlled data into properties such ...

Astro cross-site scripting vulnerability

Versions 7.1.0 through 7.3.3 of Astro contain a cross-site scripting vulnerability. This arises because the server-side View Transition CSS generator fails to restrict string animation attributes within generated declarations. When an application passes attacker-controlled data into properties su...

CVE-2026-73422

A flaw was found in Astro. A remote attacker can exploit a reflected Cross-Site Scripting XSS vulnerability due to unescaped View Transition animation properties in the server-side CSS generator. By manipulating an animation value, such as 'duration', an attacker can inject arbitrary HTML or...

CVE-2026-73422

Astro is a web framework for content-driven websites. From 2.9.0 until 7.1.0, Astro's server-side View Transition CSS generator interpolates animation properties into an inline style element without escaping them for CSS and HTML contexts. An attacker-controlled View Transition animation value su...

CVE-2026-73422 Astro: Reflected XSS via unescaped View Transition animation properties

Astro is a web framework for content-driven websites. From 2.9.0 until 7.1.0, Astro's server-side View Transition CSS generator interpolates animation properties into an inline style element without escaping them for CSS and HTML contexts. An attacker-controlled View Transition animation value su...

CVE-2026-73422 Astro: Reflected XSS via unescaped View Transition animation properties

Astro is a web framework for content-driven websites. From 2.9.0 until 7.1.0, Astro's server-side View Transition CSS generator interpolates animation properties into an inline style element without escaping them for CSS and HTML contexts. An attacker-controlled View Transition animation value su...

EUVD-2026-57606

Astro is a web framework for content-driven websites. From 2.9.0 until 7.1.0, Astro's server-side View Transition CSS generator interpolates animation properties into an inline style element without escaping them for CSS and HTML contexts. An attacker-controlled View Transition animation value su...

CVE-2026-73422

Astro is a web framework for content-driven websites. From 2.9.0 until 7.1.0, Astro's server-side View Transition CSS generator interpolates animation properties into an inline style element without escaping them for CSS and HTML contexts. An attacker-controlled View Transition animation value su...

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...

CVE-2026-73422 Astro: Reflected XSS via unescaped View Transition animation properties

Astro is a web framework for content-driven websites. From 2.9.0 until 7.1.0, Astro's server-side View Transition CSS generator interpolates animation properties into an inline style element without escaping them for CSS and HTML contexts. An attacker-controlled View Transition animation value su...

CVE-2026-73422

Astro is a web framework for content-driven websites. From 2.9.0 until 7.1.0, Astro's server-side View Transition CSS generator interpolates animation properties into an inline style element without escaping them for CSS and HTML contexts. An attacker-controlled View Transition animation value su...

CVE-2026-73422: Improper Neutralization of Input During Web Page Generation

Astro is a web framework for content-driven websites. From 2.9.0 until 7.1.0, Astro's server-side View Transition CSS generator interpolates animation properties into an inline style element without escaping them for CSS and HTML contexts. An attacker-controlled View Transition animation value su...

NPM: Astro: Reflected XSS via unescaped View Transition animation properties

NPM: Astro: Reflected XSS via unescaped View Transition animation properties vulnerability discovered by ? in WordPress Npm astro versions = 2.9.0, = 7.0.9...

GHSA-4G3V-8H47-V7G6 Astro: Reflected XSS via unescaped View Transition animation properties

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...

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...

View transitions: Handling aspect ratio changes

This post assumes some knowledge of view transitions. If you're looking for a from-scratch intro to the feature, see this article. When folks ask me for help with view transition animations that "don't quite look right", it's usually because the content changes aspect ratio. Here's how to handle...