What is the CVSS score of CVE-2025-64745?

CVE-2025-64745 has a CVSS 3.1 base score of 2.7 (Low). CVSS vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:C/C:L/I:N/A:N. EPSS exploitation probability: 0.1%.

Which versions of Astro are affected by CVE-2025-64745?

CVE-2025-64745 is a low-severity vulnerability in version 5.2.0 and involving cross-site scripting (CVSS 2.7).. A patch is available.

Is there a public PoC exploit available for CVE-2025-64745?

Yes, a public proof-of-concept exploit is available for CVE-2025-64745. Prioritise patching immediately. EPSS: 0.1%.

How to fix or mitigate CVE-2025-64745?

During next maintenance window: Apply vendor patches when convenient. Verify cross-site scripting controls are in place.

Astro CVE-2025-64745

LOW

Cross-site Scripting (XSS) (CWE-79)

2025-11-13 security-advisories@github.com

XSS Astro

2.7

CVSS 3.1 · GitHub Advisory

Severity by source

GitHub Advisory PRIMARY

2.7 LOW

AV:L/AC:H/PR:N/UI:R/S:C/C:L/I:N/A:N

Primary rating from GitHub Advisory · only source for this CVE.

CVSS VectorGitHub Advisory

CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:C/C:L/I:N/A:N

Attack Vector

Local

Attack Complexity

High

Privileges Required

None

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

None

Availability

None

Lifecycle Timeline

Analysis Generated

Mar 28, 2026 - 19:22 vuln.today

Patch released

Mar 28, 2026 - 19:22 nvd

Patch available

PoC Detected

Nov 25, 2025 - 15:13 vuln.today

Public exploit code

CVE Published

Nov 13, 2025 - 21:15 nvd

LOW 2.7

DescriptionGitHub Advisory

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.

AnalysisAI

Astro is a web framework. Rated low severity (CVSS 2.7), this vulnerability is no authentication required. Public exploit code available.

Technical ContextAI

This vulnerability is classified as Cross-Site Scripting (XSS) (CWE-79), which allows attackers to inject malicious scripts into web pages viewed by other users. 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. Affected products include: Astro. Version information: version 5.2.0.

RemediationAI

A vendor patch is available. Apply the latest security update as soon as possible. Sanitize all user input, use Content-Security-Policy headers, encode output contextually (HTML, JS, URL). Use frameworks with built-in XSS protection.