ZDF
Sign inSign up

Vulnerabilities

Vulnerability · CVE-2025-59837

Astro is a web framework that includes an image proxy.

Published Oct 28, 2025 · catalog updated Oct 29, 2025 · Astro is a web

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

Check this week

CVE-2025-59837 is not in CISA KEV. FIRST estimates a 35.00% chance of exploitation in the next 30 days. Check whether you run Astro is a web.

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
High7.2
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
35.00%
Remediation
Version ranges on file
Affected products
vendor withastro astro 5.13.4, < 5.13.10

Astro is a web framework that includes an image proxy. In versions 5.13.4 and later before 5.13.10, the image proxy domain validation can be bypassed by using backslashes in the href parameter, allowing server-side requests to arbitrary URLs. This can lead to server-side request forgery (SSRF) and potentially cross-site scripting (XSS). This vulnerability exists due to an incomplete fix for CVE-2025-58179. Fixed in 5.13.10.

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 5.13.4, < 5.13.105.13.4, < 5.13.10

How to fix CVE-2025-59837

  • Upgrade

    CVE-2025-59837 lists a fix boundary at 5.13.10. Compare the installed build with that boundary before you change production.

  • Version check

    Affected < 5.13.10

  • Official advisories

What to do

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

Should you patch?

CVE-2025-59837 is not in CISA KEV. FIRST estimates a 35.00% chance of exploitation in the next 30 days. Check whether you run Astro is a web.

Which versions are affected?

Compare what you have installed with withastro astro 5.13.4, < 5.13.10 5.13.4, < 5.13.10. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 35.00%. 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. Oct 28, 2025 · EUVD

    Detected

    Astro is a web framework that includes an image proxy. In versions 5.13.4 and later before 5.13.10, the image proxy domain validation can be bypassed by using backslashes in the href parameter, allowing server-side requests to arbitrary URLs. This can lead to server-side request forgery (SSRF) and potentially cross-site scripting (XSS). This vulnerability exists due to an incomplete fix for CVE-20

  2. Oct 29, 2025 · EUVD

    Updated

    Astro is a web framework that includes an image proxy. In versions 5.13.4 and later before 5.13.10, the image proxy domain validation can be bypassed by using backslashes in the href parameter, allowing server-side requests to arbitrary URLs. This can lead to server-side request forgery (SSRF) and potentially cross-site scripting (XSS). This vulnerability exists due to an incomplete fix for CVE-20

Sources

  • EUVDVulnerability recordEUVD-2025-36542

    Astro is a web framework that includes an image proxy. In versions 5.13.4 and later before 5.13.10, the image proxy domain validation can be bypassed by using backslashes in the href parameter, allowing server-side requests to arbitrary URLs. This can lead to server-side request

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Oct 29, 2025. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • EUVDOct 25, 2026