GHSA-7PW4-F3Q4-R2P2 Astro: Cross-site scripting via unescaped transition:* directive values on hydrated islands

Summary When a transition:persist, transition:scope, or transition:persist-props directive is applied to a client-hydrated client: component, Astro copied the directive value onto the rendered element without HTML-escaping it. If a developer reflects attacker-controlled input into one of these...

@1771technologies/oneplay (>=0.0.1, <=0.0.6), @a1st/aix (>=0.0.3, <=0.8.0) +604 more potentially affected by CVE-2026-59727 via astro (>=4.0.0, <=7.0.3)

astro NPM version =4.0.0, =0.0.1, =0.0.3, =0.2.0, =1.1.0, =1.0.0, =1.3.0, =0.9.0, =0.1.6, =1.0.0, =0.5.0, =1.0.0, =1.0.5 - @arya-technologies/astro-template 0.0.1 - @astro-reactive/common 0.3.0 and more Source cves: CVE-2026-59727 Source advisory: OSV:GHSA-7PW4-F3Q4-R2P2...

NPM: Astro: Cross-site scripting via unescaped transition:* directive values on hydrated islands

NPM: Astro: Cross-site scripting via unescaped transition: directive values on hydrated islands vulnerability discovered by ? in WordPress Npm astro versions = 3.10.0, 7.0.4...

GHSA-VJ59-8HWV-XXMV Astro: Authorization Bypass via Decode Iteration Limit and Rewrite Path Canonicalization Mismatch

Astro 6.4.7 Authorization Bypass via Decode Iteration Limit and Rewrite Path Canonicalization Mismatch Summary Astro 6.4.7 appears to reintroduce a middleware authorization bypass pattern when a request path is encoded more deeply than the newly introduced iterative URL decoder's maximum decoding...

Astro: Authorization Bypass via Decode Iteration Limit and Rewrite Path Canonicalization Mismatch

Astro 6.4.7 Authorization Bypass via Decode Iteration Limit and Rewrite Path Canonicalization Mismatch Summary Astro 6.4.7 appears to reintroduce a middleware authorization bypass pattern when a request path is encoded more deeply than the newly introduced iterative URL decoder's maximum decoding...

NPM: Astro: Authorization Bypass via Decode Iteration Limit and Rewrite Path Canonicalization Mismatch

NPM: Astro: Authorization Bypass via Decode Iteration Limit and Rewrite Path Canonicalization Mismatch vulnerability discovered by ? in WordPress Npm astro versions = 6.4.7, 6.4.8...

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...

Cross-site Scripting (XSS)

Overview astro is an Astro is a modern site builder with web best practices, performance, and DX front-of-mind. Affected versions of this package are vulnerable to Cross-site Scripting XSS via the server-side generation of the style element when unescaped animation properties are interpolated fro...

@1771technologies/oneplay (>=0.0.1, <=0.0.6), @a1st/aix (>=0.0.3, <=0.8.0) +727 more potentially affected by CVE-2026-73422 via astro (>=2.9.0, <=7.0.6)

astro NPM version =2.9.0, =0.0.1, =0.0.3, =0.2.0, =1.1.0, =1.0.0, =1.3.0, =0.9.0, =0.1.6, =1.0.0, =0.5.0, =1.0.0, =1.0.5 - @arya-technologies/astro-template 0.0.1 - @astro-component/button 0.0.1 and more Source cves: CVE-2026-73422 Source advisory: OSV:GHSA-4G3V-8H47-V7G6...

astro-simpleanalytics-plugin (0.4.0), create-sorapaper-astro-theme (1.0.0) +2 more potentially affected by unknown CVE via astro (>=7.0.2, <=7.0.6)

astro NPM version =7.0.2, =0.1.0, =1.0.0, =1.0.1 Source cves: unknown CVE Source advisory: SNYK:JS-ASTRO-18085586...

@1771technologies/oneplay (>=0.0.1, <=0.0.6), @a1st/aix (>=0.0.3, <=0.8.0) +727 more potentially affected by CVE-2026-73422 via astro (>=2.9.0, <=7.0.6)

astro NPM version =2.9.0, =0.0.1, =0.0.3, =0.2.0, =1.1.0, =1.0.0, =1.3.0, =0.9.0, =0.1.6, =1.0.0, =0.5.0, =1.0.0, =1.0.5 - @arya-technologies/astro-template 0.0.1 - @astro-component/button 0.0.1 and more Source cves: CVE-2026-73422 Source advisory: GHSA-4G3V-8H47-V7G6...

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...

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...

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...

PT-2026-66643

Summary In the composable astro/hono pipeline, the security.checkOrigin protection is only installed by the middleware primitive. The actions and pages primitives each dispatch to user code independently, so a pipeline that mounts either primitive before or without middleware will bypass the orig...

PT-2026-71318

Name of the Vulnerable Software and Affected Versions Astro versions 2.9.0 through 7.0.9 Description The server-side View Transition CSS generator interpolates animation properties into an inline style element without proper escaping for CSS and HTML contexts. An attacker can provide a malicious...

PT-2026-61807

Name of the Vulnerable Software and Affected Versions Astro versions 3.10.0 through 7.0.3 Description Astro fails to HTML-escape values for specific transition directives when applied to client-hydrated components. This occurs within the generateHydrateScript function, where the transition:persis...

Malicious code in astro (npm)

--- -= Per source details. Do not edit below this line.=- Source: amazon-inspector 949822741657acf4a6b9f6255a2f7a080ca1cc3343e9663020c5e21ce2a6b03c This tarball is published as [email protected] but does not match the legitimate withastro/astro project which is on the v5.x line and depends on picocolor...

MAL-2026-10726 Malicious code in astro (npm)

--- -= Per source details. Do not edit below this line.=- Source: amazon-inspector 949822741657acf4a6b9f6255a2f7a080ca1cc3343e9663020c5e21ce2a6b03c This tarball is published as [email protected] but does not match the legitimate withastro/astro project which is on the v5.x line and depends on picocolor...

@a1st/aix (>=0.0.3, <=0.8.0), @a1st/aix-core (>=0.2.0, <=0.8.0) +19 more potentially affected by CVE-2026-59731 via astro (>=6.0.0-beta.1, <=6.4.6)

astro NPM version =6.0.0-beta.1, =0.0.3, =0.2.0, =1.11.1, =2.7.0, =0.3.0, =0.22.0, =1.4.1, =0.19.0, =0.19.0, =1.10.0, =1.12.1 - astro-crush 1.0.0 and more Source cves: CVE-2026-59731 Source advisory: SNYK:JS-ASTRO-17901336...