CVE-2025-64764

HIGH
2025-11-19 [email protected]
7.1
CVSS 3.1
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CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:H/A:N
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
Low
Integrity
High
Availability
None

Lifecycle Timeline

4
Analysis Generated
Mar 28, 2026 - 19:23 vuln.today
Patch Released
Mar 28, 2026 - 19:23 nvd
Patch available
PoC Detected
Nov 20, 2025 - 17:54 vuln.today
Public exploit code
CVE Published
Nov 19, 2025 - 17:15 nvd
HIGH 7.1

Tags

XSS Astro

Description

Astro is a web framework. Prior to version 5.15.8, a reflected XSS vulnerability is present when the server islands feature is used in the targeted application, regardless of what was intended by the component template(s). This issue has been patched in version 5.15.8.

Analysis

Astro is a web framework. Rated high severity (CVSS 7.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available.

Technical Context

This vulnerability is classified under CWE-80. Astro is a web framework. Prior to version 5.15.8, a reflected XSS vulnerability is present when the server islands feature is used in the targeted application, regardless of what was intended by the component template(s). This issue has been patched in version 5.15.8. Affected products include: Astro. Version information: version 5.15.8.

Affected Products

Astro.

Remediation

A vendor patch is available. Apply the latest security update as soon as possible. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.

Priority Score

56
Low Medium High Critical
KEV: 0
EPSS: +0.5
CVSS: +36
POC: +20

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CVE-2025-64764 vulnerability details – vuln.today
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