NPM: Astro: XSS via unescaped spread attribute names in renderHTMLElement (incomplete fix for CVE-2026-54298)

NPM: Astro: XSS via unescaped spread attribute names in renderHTMLElement incomplete fix for CVE-2026-54298 vulnerability discovered by ? in WordPress Npm astro versions 7.0.6...

Astro: XSS via unescaped spread attribute names in renderHTMLElement (incomplete fix for CVE-2026-54298)

Summary The fix for CVE-2026-54298 GHSA-jrpj-wcv7-9fh9 added an INVALIDATTRNAMECHAR guard to addAttribute so that spread-prop attribute names containing "' /= or whitespace are dropped. A second attribute-rendering path, renderHTMLElement in packages/astro/src/runtime/server/render/dom.ts, has it...

@a1st/aix (>=0.0.3, <=0.6.0), @a1st/aix-core (>=0.2.0, <=0.6.0) +19 more potentially affected by CVE-2026-54298 via astro (>=6.0.0-beta.1, <=6.4.4)

astro NPM version =6.0.0-beta.1, =0.0.3, =0.2.0, =1.11.1, =2.7.0, =0.3.0, =1.4.1, =0.19.0, =0.19.0, =1.10.0, =1.0.0, =1.1.0 and more Source cves: CVE-2026-54298 Source advisory: SNYK:JS-ASTRO-17356187...

@a1st/aix (>=0.0.3, <=0.6.0), @a1st/aix-core (>=0.2.0, <=0.6.0) +19 more potentially affected by CVE-2026-54298 via astro (>=6.0.0-beta.1, <=6.4.4)

astro NPM version =6.0.0-beta.1, =0.0.3, =0.2.0, =1.11.1, =2.7.0, =0.3.0, =1.4.1, =0.19.0, =0.19.0, =1.10.0, =1.0.0, =1.1.0 and more Source cves: CVE-2026-54298 Source advisory: OSV:GHSA-JRPJ-WCV7-9FH9...

CVE-2026-54298

creationtimestamp| type| source ---|---|--- 2026-06-12 16:48:25+00:00| published-proof-of-concept| https://github.com/withastro/astro/security/advisories/GHSA-jrpj-wcv7-9fh9...