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CVE-2025-64764

30
FAUCET Score

CVE-2025-64764 describes a reflected Cross-Site Scripting (XSS) vulnerability in the Astro web framework, affecting versions prior to 5.15.8, specifically when the server islands feature is utilized. This medium-severity vulnerability (CVSS 5.4) can be exploited with low attack complexity via a network vector, requiring user interaction, and could lead to limited confidentiality and integrity impacts. While there is no evidence of active exploitation or Metasploit modules, a Nuclei template exists for detection, and the CVE has minimal community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
< 5.15.8CPE matchmatch criteria
cpe:2.3:a:astro:astro:*:*:*:*:*:node.js:*:*

CVSS Data

CVSS version used by this source: 3.1

7.1HIGH

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 Impact
LOW
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
4.2
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.50%
Probability of exploitation in next 30 days
EPSS Percentile
39.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
Nuclei: CVE-2025-64764 · Nov 21, 2025
This CVE's current EPSS score of 0.0050 is in the 42nd percentile among its peer group of 26,221 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

github_advisorypatch availablevia nvd_reference
View patch
npmpatch availablevia ghsa
Product: astroFixed in: 5.15.8

Vendor Advisories (1)

npmGHSA-wrwg-2hg8-v723high

Astro vulnerable to reflected XSS via the server islands feature

Nov 19, 2025

References

github.com / withastro/astro/commit/790d9425f39bbbb462f1c27615781cd965009f91
Patch
github.com / withastro/astro/security/advisories/GHSA-wrwg-2hg8-v723
ExploitVendor Advisory