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CVE-2025-64745

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

Published: Nov 13, 2025Updated: Nov 25, 2025 Sources: CVE List NVD GHSACWE-79
NVD MITRE
2.7CVSSLOW
EPSS Score
0.2%
Top 89.1%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

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 Vector Breakdown

AV:LAC:HPR:NUI:RS:CC:LI:NA:N
Exploitability
AV:LAttack Vector
Local
AC:HAttack Complexity
High
PR:NPrivileges Required
None
UI:RUser Interaction
Required
Scope
S:CScope
Changed
Impact
C:LConfidentiality
Low
I:NIntegrity
None
A:NAvailability
None
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Weaknesses

CWE-79

Affected Products

astrowithastro
Library
OSS Libraries / web-framework
astroastro
Mixed
OSS Libraries / web-framework
astronpmOSS Libraries
withastrooss-projectOSS Librariesaka astro, @astrojs/cloudflare
astrooss-projectUSOSS Librariesaka @astrojs/node, @astrojs/cloudflare
npmpackage-ecosystemOSS Libraries

Attack Graph

Products CVE Techniques Tactics

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Exploitability

Official Patch Available

MITRE ATT&CK

2 techniques
Execution
Initial Access
View detailed technique mapping

References

https://github.com/withastro/astro/security/advisories/GHSA-w2vj-39qv-7vh7
github.com
https://github.com/withastro/astro/pull/12994
github.com
https://github.com/withastro/astro/commit/790d9425f39bbbb462f1c27615781cd965009f91
github.com
and 3 more references View all →

Timeline

Published
Nov 13, 2025
Last Updated
Nov 25, 2025

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