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Vulnerabilities

Vulnerability · CVE-2025-55207

Astro is a web framework for content-driven websites.

Published Aug 15, 2025 · catalog updated Aug 15, 2025 · Astro is a web

Last checked Oct 26, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2025-55207. EPSS is 0.57%. 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
Medium5.5
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.57%
Remediation
Version ranges on file
Affected products
vendor withastro astro < 9.4.1

Astro is a web framework for content-driven websites. Following CVE-2025-54793 there's still an Open Redirect vulnerability in a subset of Astro deployment scenarios prior to version 9.4.1. Astro 5.12.8 addressed CVE-2025-54793 where https://example.com//astro.build/press would redirect to the external origin //astro.build/press. However, with the Node deployment adapter in standalone mode and trailingSlash set to "always" in the Astro configuration, https://example.com//astro.build/press still redirects to //astro.build/press. This affects any user who clicks on a specially crafted link point

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 < 9.4.1< 9.4.1

How to fix CVE-2025-55207

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-2025-55207. EPSS is 0.57%. 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 < 9.4.1 < 9.4.1. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 0.57%. 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. Aug 15, 2025 · EUVD

    Detected

    Astro is a web framework for content-driven websites. Following CVE-2025-54793 there's still an Open Redirect vulnerability in a subset of Astro deployment scenarios prior to version 9.4.1. Astro 5.12.8 addressed CVE-2025-54793 where https://example.com//astro.build/press would redirect to the external origin //astro.build/press. However, with the Node deployment adapter in standalone mode and tra

  2. Aug 15, 2025 · EUVD

    Updated

    Astro is a web framework for content-driven websites. Following CVE-2025-54793 there's still an Open Redirect vulnerability in a subset of Astro deployment scenarios prior to version 9.4.1. Astro 5.12.8 addressed CVE-2025-54793 where https://example.com//astro.build/press would redirect to the external origin //astro.build/press. However, with the Node deployment adapter in standalone mode and tra

Sources

  • CVE.orgVulnerability recordCVE-2025-55207

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2025-55207

    30-day exploitation probability 0.57%

    first.org
  • EUVDVulnerability recordEUVD-2025-25029

    Astro is a web framework for content-driven websites. Following CVE-2025-54793 there's still an Open Redirect vulnerability in a subset of Astro deployment scenarios prior to version 9.4.1. Astro 5.12.8 addressed CVE-2025-54793 where https://example.com//astro.build/press would r

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Oct 26, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • FIRST EPSSOct 23, 2026
  • CVE.orgOct 22, 2026
  • EUVDOct 22, 2026