CVE-2026-27971 Details.
Qwik - Unauthenticated RCE via server$ Deserialization
Atlas does not check this one. Needs requests that change data.
To test for this one, the check would have to send requests that could change data on the site. Atlas only ever reads public pages, so it does not run this check.
About CVE-2026-27971. What It Means.
Qwik <=1.19.0 contains an insecure deserialization vulnerability in the server$ RPC mechanism, letting unauthenticated attackers execute arbitrary code remotely, exploit requires require() availability at runtime.
Affected Product. What Is Hit.
The record for CVE-2026-27971 does not name a vendor or product yet.
References. Where To Read More.
FAQ
Common Questions.
Qwik - Unauthenticated RCE via server$ Deserialization. Qwik <=1.19.0 contains an insecure deserialization vulnerability in the server$ RPC mechanism, letting unauthenticated attackers execute arbitrary code remotely, exploit requires require() availability at runtime.
No. To test for this one, the check would have to send requests that could change data on the site. Atlas only ever reads public pages, so it does not run this check. The facts about CVE-2026-27971 are on this page, and you can request a demo to see how Brandefense watches your whole external attack surface.
CVE-2026-27971 is not on the CISA Known Exploited Vulnerabilities list at the time of writing, but it is still worth fixing.
Update the affected software 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-2026-27971. Atlas does not run a check for it, so nothing here says whether a particular site is affected.