CVE-2026-32282 TOCTOU permits root escape on Linux via Root.Chmod in os in internal/syscall/unix

On Linux, if the target of Root.Chmod is replaced with a symlink while the chmod operation is in progress, Chmod can operate on the target of the symlink, even when the target lies outside the root. The Linux fchmodat syscall silently ignores the ATSYMLINKNOFOLLOW flag, which Root.Chmod uses to...

Security Bulletin: TOCTOU Symlink Vulnerability in filelock, affects watsonx.data

Summary filelock versions prior to 3.20.1 are vulnerable to a Time-of-Check-Time-of-Use TOCTOU race condition. Local attackers can exploit this via symlinks to corrupt or truncate arbitrary files during lock creation on Unix, Linux, macOS, and Windows. The issue is fixed in version 3.20.1; partia...

CVE-2026-39934: Loop with Unreachable Exit Condition

Loop with unreachable exit condition 'infinite loop' vulnerability in The Wikimedia Foundation Mediawiki - GrowthExperiments Extension allows Leveraging Time-of-Check and Time-of-Use TOCTOU Race Conditions. This issue was remediated only on the master branch...

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...

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...

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...

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-2026-32298

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...

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...

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...

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...

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...