CVE-2026-27456

A flaw was found in util-linux. When an /etc/fstab entry is configured with the user,loop options, the mount program checks the file path with user permissions but later opens it with root privileges. This creates a brief Time-of-Check-Time-of-Use TOCTOU window where an attacker can substitute th...

CVE-2026-32602: Time-of-check Time-of-use (TOCTOU) Race Condition

Homarr is an open-source dashboard. Prior to 1.57.0, the user registration endpoint /api/trpc/user.register is vulnerable to a race condition that allows an attacker to create multiple user accounts from a single-use invite token. The registration flow performs three sequential database operation...

CVE-2026-27456

util-linux is a random collection of Linux utilities. Prior to version 2.41.4, a TOCTOU Time-of-Check-Time-of-Use vulnerability has been identified in the SUID binary /usr/bin/mount from util-linux. The mount binary, when setting up loop devices, validates the source file path with user privilege...

AZL-81846 CVE-2026-27456 affecting package util-linux for versions less than 2.40.2-4

util-linux is a random collection of Linux utilities. Prior to version 2.41.4, a TOCTOU Time-of-Check-Time-of-Use vulnerability has been identified in the SUID binary /usr/bin/mount from util-linux. The mount binary, when setting up loop devices, validates the source file path with user privilege...

ALPINE-CVE-2026-27456

util-linux is a random collection of Linux utilities. Prior to version 2.41.4, a TOCTOU Time-of-Check-Time-of-Use vulnerability has been identified in the SUID binary /usr/bin/mount from util-linux. The mount binary, when setting up loop devices, validates the source file path with user privilege...

CVE-2026-27456

util-linux is a random collection of Linux utilities. Prior to version 2.41.4, a TOCTOU Time-of-Check-Time-of-Use vulnerability has been identified in the SUID binary /usr/bin/mount from util-linux. The mount binary, when setting up loop devices, validates the source file path with user privilege...

CVE-2026-27456 util-linux: TOCTOU Race Condition in util-linux mount(8) - Loop Device Setup

util-linux is a random collection of Linux utilities. Prior to version 2.41.4, a TOCTOU Time-of-Check-Time-of-Use vulnerability has been identified in the SUID binary /usr/bin/mount from util-linux. The mount binary, when setting up loop devices, validates the source file path with user privilege...

CVE-2026-27456

CVE-2026-27456 affects util-linux mount(8): a TOCTOU race in the SUID mount when setting up loop devices allows a local user to trick mount into opening a root-owned target by replacing the source path during the brief window between validation and open. Exploitation requires an /etc/fstab entry ...

JLSEC-2026-52

Time-of-check Time-of-use TOCTOU race condition in pgdump in PostgreSQL allows an object creator to execute arbitrary SQL functions as the user running pgdump, which is often a superuser. The attack involves replacing another relation type with a view or foreign table. The attack requires waiting...

PT-2026-32476

Time-of-check Time-of-use TOCTOU race condition in pg dump in PostgreSQL allows an object creator to execute arbitrary SQL functions as the user running pg dump, which is often a superuser. The attack involves replacing another relation type with a view or foreign table. The attack requires waiti...

PT-2026-32298

Summary Sandbox escape via TOCTOU race in remote FS bridge readFile Current Maintainer Triage - Normalized severity: critical - Assessment: v2026.3.28 remote sandbox reads still do path-check then separate file read, so the TOCTOU sandbox escape remains present in the latest shipped tag. Affected...

CVE-2026-27456: Improper Link Resolution Before File Access

util-linux is a random collection of Linux utilities. Prior to version 2.41.4, a TOCTOU Time-of-Check-Time-of-Use vulnerability has been identified in the SUID binary /usr/bin/mount from util-linux. The mount binary, when setting up loop devices, validates the source file path with user privilege...

PT-2026-32319

Summary Sandbox file operations use check-then-act, bypassing fd-based TOCTOU defenses Current Maintainer Triage - Status: narrow - Normalized severity: medium - Assessment: Released workspace-only apply patch remove and mkdir operations were still check-then-act, but the draft overstates scope b...

EUVD-2026-18350

A Time-of-Check to Time-of-Use TOCTOU race condition vulnerability in Balena Etcher for Windows prior to v2.1.4 allows attackers to escalate privileges and execute arbitrary code via replacing a legitimate script with a crafted payload during the flashing process...

CVE-2026-30332: Time-of-check Time-of-use (TOCTOU) Race Condition

A Time-of-Check to Time-of-Use TOCTOU race condition vulnerability in Balena Etcher for Windows prior to v2.1.4 allows attackers to escalate privileges and execute arbitrary code via replacing a legitimate script with a crafted payload during the flashing process...

ONNX: TOCTOU arbitrary file read/write in save_external_dat

Summary The saveexternaldata method seems to include multiple issues introducing a local TOCTOU vulnerability, an arbitrary file read/write on any system. It potentially includes a path validation bypass on Windows systems. Regarding the TOCTOU, an attacker seems to be able to overwrite victim's...

Time-of-check Time-of-use (TOCTOU) Race Condition

Overview anthropic is a The official Python library for the anthropic API Affected versions of this package are vulnerable to Time-of-check Time-of-use TOCTOU Race Condition via the validatepath function in the betabuiltinmemorytool.py‎ file. An attacker can access files outside the intended...

Exploit for CVE-2026-30332

CVE-2026-30332 Description A Time-of-Check to Time-of-Use...

CVE-2026-32921: Time-of-check Time-of-use (TOCTOU) Race Condition

OpenClaw before 2026.3.8 contains an approval bypass vulnerability in system.run where mutable script operands are not bound across approval and execution phases. Attackers can obtain approval for script execution, modify the approved script file before execution, and execute different content...

CVE-2026-32988: Time-of-check Time-of-use (TOCTOU) Race Condition

OpenClaw before 2026.3.11 contains a sandbox boundary bypass vulnerability in fs-bridge staged writes where temporary file creation and population are not pinned to a verified parent directory. Attackers can exploit a race condition in parent-path alias changes to write attacker-controlled bytes...