CVE-2025-64745: low-severity vulnerability in withastro astro
Astro development server error page vulnerable to reflected Cross-site Scripting
Published
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
8Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 2.7epss 0.3%
Astro is a web framework. Starting in version 5.2.0 and prior to version 5.15.6, a Reflected Cross-Site Scripting (XSS) vulnerability exists in Astro's development server error pages when the `trailingSlash` configuration option is used. An attacker can inject arbitrary JavaScript code that executes in the victim's browser context by crafting a malicious URL. While this vulnerability only affects the development server and not production builds, it could be exploited to compromise developer environments through social engineering or malicious links. Version 5.15.6 fixes the issue.
CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:C/C:L/I:N/A:N
Affected products
withastro · astroRelated CVEs — withastro astro
In the same product, most dangerous first.
CVE-2026-25545MEDIUMAstro has Full-Read SSRF in error rendering via Host: header injectionEPSS 1.9%CVE-2024-56159HIGHServer source code is exposed to the public if sourcemaps are enabledEPSS 1.5%CVE-2025-64525MEDIUMAstro: URL manipulation via unsanitized headers leads to path-based middleware protections bypass, potential SSRF/cache-poisoning, CVE-2025-61925 bypassEPSS 1.2%CVE-2025-58179HIGHAstro Cloudflare adapter is vulnerable to Server-Side Request Forgery via /_image endpointEPSS 0.9%CVE-2026-84376MEDIUMAstro: Authorization bypass from missing path-segment boundary check when stripping the configured baseEPSS 0.7%CVE-2025-54793MEDIUMAstro: Duplicate trailing slash feature can lead to Open RedirectsEPSS 0.7%
References
https://github.com/withastro/astro/blob/5bc37fd5cade62f753aef66efdf40f982379029a/packages/astro/src/template/4xx.ts#L133-L149https://github.com/withastro/astro/commit/790d9425f39bbbb462f1c27615781cd965009f91https://github.com/withastro/astro/pull/12994https://github.com/withastro/astro/security/advisories/GHSA-w2vj-39qv-7vh7