CVE-2026-25545 Details.
Astro SSR - Server-Side Request Forgery
Atlas does not check this one. Needs an outside server.
To test for this one, the site would have to contact a server outside your network and report back. Atlas does not run checks that need that, so it does not run this one.
About CVE-2026-25545. What It Means.
Astro before 5.17.3 and @astrojs/node before 9.5.4 are vulnerable to full-read SSRF due to improper Host header validation in error page rendering, allowing attackers to redirect requests and access internal resources.
Affected Product. What Is Hit.
- Vendor
- astro
- Product
- Astro
FAQ
Common Questions.
Astro SSR - Server-Side Request Forgery. Astro before 5.17.3 and @astrojs/node before 9.5.4 are vulnerable to full-read SSRF due to improper Host header validation in error page rendering, allowing attackers to redirect requests and access internal resources.
No. To test for this one, the site would have to contact a server outside your network and report back. Atlas does not run checks that need that, so it does not run this one. The facts about CVE-2026-25545 are on this page, and you can request a demo to see how Brandefense watches your whole external attack surface.
CVE-2026-25545 is not on the CISA Known Exploited Vulnerabilities list at the time of writing, but it is still worth fixing.
Update Astro to the latest version from the vendor, or follow the vendor's advice to switch off the affected feature. Vendor links are listed on this page when they are known.
This page lists the public facts about CVE-2026-25545. Atlas does not run a check for it, so nothing here says whether a particular site is affected.