CVE-2026-42493

XEN CVE-2026-42493 involves x86 shadow paging. The XSA advisory states the feature is deprecated due to costly preemption handling, with alternatives (HVM/PVH: HAP, PV: shim) available, though retained for security-risk use. Affects all x86 Xen builds with SHADOW_PAGING=y; unprivileged guests may...

EUVD-2026-49770

Addressing certain issues, in particular related to operations which may take excessively long and therefore would need preemption, has turned out overly costly. Since alternatives HVM/PVH: HAP, PV: shim are commonly available, the decision was to deprecate the functionality, while still retainin...

CVE-2026-42493 x86 shadow paging is deprecated

Addressing certain issues, in particular related to operations which may take excessively long and therefore would need preemption, has turned out overly costly. Since alternatives HVM/PVH: HAP, PV: shim are commonly available, the decision was to deprecate the functionality, while still retainin...

Serverless Billing Attack

bref/bref is vulnerable to Serverless Billing Attack. The vulnerability is due to slow multi-byte string operations performed on the Content-Type header values in the Riverline/multipart-parser library used by Bref. It allows an attacker to send specially crafted requests, causing long operations...

Bref 安全漏洞

Bref is an open source project by Matthieu Napoli Individual Developer that helps you go serverless on AWS using PHP. A security vulnerability exists in versions prior to Bref 2.1.17, which stems from the fact that an attacker can send specially designed requests that force the server to perform...