Secuno
ENNL
Book demo

CVE-2025-64764

Astro vulnerability

7.1 HIGHPublic exploitEPSS 0.49%
  1. Published19 Nov 2025

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.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionRequired
ScopeUnchanged
ConfidentialityLow
IntegrityHigh
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:H/A:N

Affected products

Astro< 5.15.8

Remediation

Fixed in
Astro≥ 5.15.8

References

Related CVEs

Recent high-severity vulnerabilities sharing a weakness type.

CVE-2026-528548.6
Maps is a MediaWiki extension that enables visualization of geographic data through…
CVE-2024-583558.9
Cal.com (calcom/cal.diy) versions through 4.7.15 contain a stored cross-site scripting…
CVE-2024-583538.9
Cal.com (repository calcom/cal.diy) in versions <= 4.7.15 is vulnerable to cross-site…
CVE-2026-439388.1
YetAnotherForum.NET (YAF.NET) is a C# ASP.NET forum. Prior to 4.0.5 and 3.2.12, the…
CVE-2026-60028.8
Improper neutralization of Script-Related HTML tags in a web page (basic XSS)…
CVE-2026-328919.0
Anchorr is a Discord bot for requesting movies and TV shows and receiving notifications…

Frequently asked

Is CVE-2025-64764 being actively exploited?

CVE-2025-64764 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 0.49%.

How severe is CVE-2025-64764?

CVE-2025-64764 has a CVSS 3.1 base score of 7.1, rated high. EPSS estimates a 0.49% probability of exploitation.

Which products are affected by CVE-2025-64764?

Affected products include Astro.

How do I fix CVE-2025-64764?

Upgrade affected software to a fixed version, for example Astro 5.15.8 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2025-64764 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

See how prioritisation worksBook a demo

Get Patch this first every Monday

Five vulnerabilities that matter this week, ranked on real exploitation. Plain language, one email, no spam.

You can unsubscribe with one click from every issue. We handle your details as described in our privacy policy.

Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.