CWE-754Class1 in KEV

Improper Check for Unusual or Exceptional Conditions

Incomplete in the CWE catalog · 386 CVEs mapped

386
CVEs mapped
1
In KEV
6.7
Median CVSS
What it is

The product does not check or incorrectly checks for unusual or exceptional conditions that are not expected to occur frequently during day to day operation of the product.

Recent examples
5.9cvss
CVE-2026-85014

CVE-2026-85014 - MEDIUM Severity Vulnerability

undici's experimental WebSocketStream client crashes the whole Node.js process when a remote peer closes the TCP connection without a WebSocket close handshake. On an unclean close the internal socket-close handler calls abort on the writable stream unconditionally and discards the returned promise, but per the WHATWG Streams standard aborting a locked writable returns a promise that rejects with a TypeError. Because the application holds a writer on that writable, which is the only way to write, the rejection is never observed and Node's default unhandled-rejection behavior terminates the process. An untrusted server can therefore crash a client with a single abrupt disconnect, with no authentication and no application mistake. This affects undici versions from 7.0.0 up to 7.29.1 and from 8.0.0 up to 8.10.2. Users should upgrade to undici 7.29.1 or 8.10.2.

MEDIUMno explanation yet
0%
epss
7.5cvss
CVE-2026-55484

CVE-2026-55484 - HIGH Severity Vulnerability

ALOS HTTP is a Linux-first Go web framework and application server built around a custom networking stack. Prior to 0.0.0-20260617230736-314b6783e196, core/utils.go::sanitizeRequestPath calls splitPathQuery on a request path beginning with a question mark and then performs the unchecked p[0] access without checking whether the resulting path is empty. An unauthenticated client can send a malformed request such as a question-mark-only path through h1_plain.go::ParseH1RequestHead, hpack.go::decodeSimpleGetPathHTTPSRequest, hpack.go::observeHeader, or h3_conn.go::handleRequestStream, causing an out-of-bounds panic before core.Recovery() middleware runs and terminating the server process. This issue is fixed in pseudo-version 0.0.0-20260617230736-314b6783e196.

HIGHno explanation yet
0%
epss
8.8cvss
CVE-2026-79073

CVE-2026-79073 - HIGH Severity Vulnerability

Improper state validation in Parser in Google Chrome prior to 152.0.7977.65 allowed a remote attacker to potentially execute arbitrary code inside the sandbox via a crafted HTML page. (Chromium security severity: Medium)

HIGHno explanation yet
0%
epss
The record
Technical detail
CWE ID
CWE-754
Abstraction
Class
Structure
Simple
Status
Incomplete
References (1)