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Vulnerabilities

Security fix · CVE-2025-64525

Astro is a web framework.

Published Nov 13, 2025 · catalog updated Nov 13, 2025 · Astro is a web

Last checked Oct 25, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2025-64525. EPSS is 1.24%. Act only if a listed version of Astro is a web is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (Astro is a web).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.

Same product and reporting

Severity
Medium6.5
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
1.24%
Remediation
Version ranges on file
Affected products
vendor withastro astro 2.16.0, < 5.15.5

Astro is a web framework. In Astro versions 2.16.0 up to but excluding 5.15.5 which utilizeon-demand rendering, request headers and are insecurely used, without sanitization, to build the URL. This has several consequences, the most important of which are: middleware-based protected route bypass (only via ), DoS via cache poisoning (if a CDN is present), SSRF (only via ), URL pollution (potential SXSS, if a CDN is present), and WAF bypass. Version 5.15.5 contains a patch.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor withastro astro 2.16.0, < 5.15.52.16.0, < 5.15.5

How to fix CVE-2025-64525

  • Upgrade

    CVE-2025-64525 lists a fix boundary at 5.15.5. Compare the installed build with that boundary before you change production.

  • Version check

    Affected < 5.15.5

  • Advisory

    Open the cve_org record and follow its fix.

  • Official advisories

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2025-64525. EPSS is 1.24%. Act only if a listed version of Astro is a web is installed.

Which versions are affected?

Compare what you have installed with withastro astro 2.16.0, < 5.15.5 2.16.0, < 5.15.5. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 1.24%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Nov 13, 2025 · EUVD

    Detected

    Astro is a web framework. In Astro versions 2.16.0 up to but excluding 5.15.5 which utilizeon-demand rendering, request headers and are insecurely used, without sanitization, to build the URL. This has several consequences, the most important of which are: middleware-based protected route bypass (only via ), DoS via cache poisoning (if a CDN is present), SSRF (only via ), URL pollution (potential

  2. Nov 13, 2025 · EUVD

    Updated

    Astro is a web framework. In Astro versions 2.16.0 up to but excluding 5.15.5 which utilizeon-demand rendering, request headers and are insecurely used, without sanitization, to build the URL. This has several consequences, the most important of which are: middleware-based protected route bypass (only via ), DoS via cache poisoning (if a CDN is present), SSRF (only via ), URL pollution (potential

Sources

  • CVE.orgVulnerability recordCVE-2025-64525

    Official CVE identifier

    cve.org
  • EUVDVulnerability recordEUVD-2025-175298

    Astro is a web framework. In Astro versions 2.16.0 up to but excluding 5.15.5 which utilizeon-demand rendering, request headers and are insecurely used, without sanitization, to build the URL. This has several consequences, the most important of which are: middleware-based protec

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Oct 25, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • CVE.orgOct 25, 2026
  • EUVDOct 25, 2026