Low 2.7Published Nov 13, 2025

CVE-2025-64745Astro development server error page vulnerable to reflected Cross-site Scripting

Updated under an hour ago (Oct 27, 2026, 5:00 AM ET)

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No exploitation reported and no EPSS estimate yet.

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Every CVE for withastro astro

Exploited in the last 30 days

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: 2.7 LOW (v3.1, CNA)CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:C/C:L/I:N/A:N
Weakness (CWE): CWE-79
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Analyzed
Record last updated: Nov 13, 2025
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

withastro astro withastro:astro (from the name)	from 5.2.0, < 5.15.6	CNA record
astro astro astro:astro	from 5.2.0 before 5.15.6	NVD

References

References

https://github.com/withastro/astro/security/advisories/GHSA-w2vj-39qv-7vh7	x-refsource-confirm, exploit, third-party-advisory
https://github.com/withastro/astro/pull/12994	x-refsource-misc, patch
https://github.com/withastro/astro/commit/790d9425f39bbbb462f1c27615781cd965009f91	x-refsource-misc, patch
https://github.com/withastro/astro/blob/5bc37fd5cade62f753aef66efdf40f982379029a/packages/astro/src/template/4xx.ts#L133-L149	x-refsource-misc, product

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.