Common Weakness Enumeration
CWE-367
AllowedTime-of-check Time-of-use (TOCTOU) Race Condition
Abstraction: Base · Status: Incomplete
The product checks the state of a resource before using that resource, but the resource's state can change between the check and the use in a way that invalidates the results of the check.
1060 vulnerabilities reference this CWE, most recent first.
CVE-2026-54370 (GCVE-0-2026-54370)
Vulnerability from cvelistv5 – Published: 2026-06-29 12:38 – Updated: 2026-07-14 21:33 X_Open Source
VLAI
EPSS
VEX
Title
acl < 2.4.0 TOCTOU Symlink Traversal via getfacl/setfacl/chacl
Summary
acl before version 2.4.0 contains a time-of-check to time-of-use (TOCTOU) race condition vulnerability that allows local attackers to escalate privileges by replacing a pathname component with a symbolic link between an lstat() check and subsequent symlink-following operations such as stat(), chown(), chmod(), acl_get_file(), and acl_set_file(). Attackers who control a pathname component can redirect file access control list operations to arbitrary files when getfacl, setfacl, or chacl is invoked by a privileged process over an attacker-controlled path, resulting in local privilege escalation.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-367 - Time-of-check Time-of-use (TOCTOU) Race Condition
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://cgit.git.savannah.nongnu.org/cgit/acl.git… | patch |
| https://cgit.git.savannah.nongnu.org/cgit/acl.git… | issue-tracking |
| https://www.vulncheck.com/advisories/acl-toctou-s… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| acl project | acl |
Affected:
0 , < 2.4.0
(semver)
|
Date Public
2026-06-29 00:00
Credits
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CVE-2026-54353 (GCVE-0-2026-54353)
Vulnerability from cvelistv5 – Published: 2026-06-26 20:44 – Updated: 2026-06-29 13:17
VLAI
EPSS
VEX
Title
Budibase: Potential SSRF DNS rebinding bypass in outbound fetch validation
Summary
Budibase is an open-source low-code platform. Prior to 3.39.9, authenticated users with automation permissions can bypass Budibase's SSRF blacklist through DNS rebinding. The outbound fetch flow validates a hostname against the blacklist before the request is sent, but the actual socket connection later performs a separate DNS lookup through node-fetch. Since the validated IPs are never pinned to the connection, an attacker-controlled hostname can return a public IP during validation and a private/internal IP during the real connection. This results in a non-blind SSRF primitive against internal services reachable from the Budibase host, including loopback, RFC1918 ranges, and cloud metadata endpoints. This vulnerability is fixed in 3.39.9.
Severity
8.5 (High)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/Budibase/budibase/security/adv… | x_refsource_CONFIRM |
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CVE-2026-54327 (GCVE-0-2026-54327)
Vulnerability from cvelistv5 – Published: 2026-06-23 19:28 – Updated: 2026-06-26 18:09
VLAI
EPSS
VEX
Title
Pi: Race condition in auth.json writes could expose stored credentials
Summary
Pi is a minimal terminal coding harness. From 0.74.0 until 0.78.1, Pi stored API keys and OAuth credentials in auth.json. A race condition in the file write path could briefly create or rewrite this file with permissions derived from the process umask before tightening the file to owner-only permissions. This vulnerability is fixed in 0.78.1.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/earendil-works/pi/security/adv… | x_refsource_CONFIRM |
| https://github.com/earendil-works/pi/commit/135fb… | x_refsource_MISC |
| https://github.com/earendil-works/pi/releases/tag… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| earendil-works | pi |
Affected:
>= 0.74.0, < 0.78.1
|
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CVE-2026-54228 (GCVE-0-2026-54228)
Vulnerability from cvelistv5 – Published: 2026-06-13 02:34 – Updated: 2026-07-15 00:43
VLAI
EPSS
VEX
Title
Abrt: toctou race condition in abrt-dbus setelement allows arbitrary file writes to dump directories
Summary
A time-of-check time-of-use (TOCTOU) race condition was found in the abrt-dbus D-Bus service's SetElement method. Between dump directory creation and post-create event execution, any local user can call SetElement to write arbitrary text files into the root-owned dump directory, bypassing package validation and allowing crashes of unpackaged binaries to survive post-create processing.
Severity
7.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-367 - Time-of-check Time-of-use (TOCTOU) Race Condition
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://access.redhat.com/security/cve/CVE-2026-54228 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2488531 | issue-trackingx_refsource_REDHAT |
| https://security.access.redhat.com/data/csaf/v2/v… | x_sadp-csaf-vex |
Impacted products
3 products
| Vendor | Product | Version | |
|---|---|---|---|
| Red Hat | Red Hat Enterprise Linux 6 |
cpe:/o:redhat:enterprise_linux:6 |
|
| Red Hat | Red Hat Enterprise Linux 7 |
cpe:/o:redhat:enterprise_linux:7 |
|
| Red Hat | Red Hat Enterprise Linux 8 |
cpe:/o:redhat:enterprise_linux:8 |
Date Public
2026-05-04 00:00
Credits
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CVE-2026-54055 (GCVE-0-2026-54055)
Vulnerability from cvelistv5 – Published: 2026-06-12 20:03 – Updated: 2026-06-15 19:28
VLAI
EPSS
VEX
Title
Kitty has an Arbitrary File Write via Symlink Race Condition in File Transmission Protocol
Summary
Kitty is a cross-platform GPU based terminal. In versions prior to 0.47.2, a local privilege escalation vulnerability exists in kitty's file transmission protocol where a child process running in the terminal can write to arbitrary files on the filesystem by exploiting a TOCTOU (Time-of-Check-Time-of-Use) race condition between symlink validation and file creation. The `os.open()` call used to create files does not use `O_NOFOLLOW`, allowing an attacker to create a symlink between the initial stat check and the actual file open, causing the write to follow the symlink to an arbitrary destination. Version 0.47.2 fixes the issue.
Severity
5 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/kovidgoyal/kitty/security/advi… | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| kovidgoyal | kitty |
Affected:
< 0.47.2
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CVE-2026-53945 (GCVE-0-2026-53945)
Vulnerability from cvelistv5 – Published: 2026-06-24 18:09 – Updated: 2026-06-25 15:38
VLAI
EPSS
VEX
Title
Ghost: Server-side request forgery via DNS rebinding in external request handling
Summary
Ghost is a Node.js content management system. From 6.0.9 until 6.21.1, Ghost’s private-IP check for outbound HTTP requests could be bypassed via DNS rebinding, allowing an attacker to coerce the Ghost server into reaching hosts on internal networks through features that issue external fetches. This vulnerability is fixed in 6.21.1.
Severity
4 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
1 reference
| URL | Tags |
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CVE-2026-53838 (GCVE-0-2026-53838)
Vulnerability from cvelistv5 – Published: 2026-06-12 21:57 – Updated: 2026-06-15 21:41 X_Open Source
VLAI
EPSS
VEX
Title
OpenClaw < 2026.5.27 - Node Pairing State Mutation via Reconnection
Summary
OpenClaw before 2026.5.27 contains a state mutation vulnerability in node pairing reconnection that allows paired nodes to confuse approval scope decisions. Attackers can exploit reconnection logic to restore or present broader node authority than intended, potentially bypassing approval restrictions.
Severity
6.5 (Medium)
9.8 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-367 - Time-of-check Time-of-use (TOCTOU) Race Condition
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/openclaw/openclaw/security/adv… | vendor-advisory |
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Impacted products
Date Public
2026-05-28 00:00
Credits
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CVE-2026-53831 (GCVE-0-2026-53831)
Vulnerability from cvelistv5 – Published: 2026-06-12 21:56 – Updated: 2026-06-15 12:54 X_Open Source
VLAI
EPSS
VEX
Title
OpenClaw < 2026.5.18 - Arbitrary File Read via Shell Expansion in system.run Safe-bin Allowlist
Summary
OpenClaw before 2026.5.18 contains a policy enforcement vulnerability in system.run safe-bin allowlist validation that allows shell expansion to modify command interpretation on POSIX nodes. Authenticated operators can exploit shell metacharacters in approved commands to read unintended node-local files and expose sensitive configuration data.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-367 - Time-of-check Time-of-use (TOCTOU) Race Condition
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/openclaw/openclaw/security/adv… | vendor-advisory |
| https://www.vulncheck.com/advisories/openclaw-arb… | third-party-advisory |
Impacted products
Date Public
2026-05-28 00:00
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CVE-2026-53822 (GCVE-0-2026-53822)
Vulnerability from cvelistv5 – Published: 2026-06-12 21:56 – Updated: 2026-06-15 18:26 X_Open Source
VLAI
EPSS
VEX
Title
OpenClaw < 2026.5.18 - Command Argument Modification via Shell Wrapper Between Approval and Execution
Summary
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Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-367 - Time-of-check Time-of-use (TOCTOU) Race Condition
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/openclaw/openclaw/security/adv… | vendor-advisory |
| https://www.vulncheck.com/advisories/openclaw-com… | third-party-advisory |
Impacted products
Date Public
2026-05-28 00:00
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CVE-2026-53806 (GCVE-0-2026-53806)
Vulnerability from cvelistv5 – Published: 2026-06-11 20:05 – Updated: 2026-06-23 16:16 X_Open Source
VLAI
EPSS
VEX
Title
OpenClaw < 2026.5.12 - Shell Option Parsing Bypass in Exec Revalidation
Summary
OpenClaw before 2026.5.12 contains a shell option parsing vulnerability that allows combined POSIX shell flags to bypass exec revalidation checks. Attackers can exploit this by using combined shell options to execute inline shell content without intended allowlist validation, potentially enabling unauthorized command execution when the affected feature is enabled.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-367 - Time-of-check Time-of-use (TOCTOU) Race Condition
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/openclaw/openclaw/security/adv… | vendor-advisory |
| https://www.vulncheck.com/advisories/openclaw-she… | third-party-advisory |
Impacted products
Date Public
2026-05-28 00:00
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Mitigation
Implementation
The most basic advice for TOCTOU vulnerabilities is to not perform a check before the use. This does not resolve the underlying issue of the execution of a function on a resource whose state and identity cannot be assured, but it does help to limit the false sense of security given by the check.
Mitigation
Implementation
When the file being altered is owned by the current user and group, set the effective gid and uid to that of the current user and group when executing this statement.
Mitigation
Architecture and Design
Limit the interleaving of operations on files from multiple processes.
Mitigation
Implementation
Architecture and Design
If you cannot perform operations atomically and you must share access to the resource between multiple processes or threads, then try to limit the amount of time (CPU cycles) between the check and use of the resource. This will not fix the problem, but it could make it more difficult for an attack to succeed.
Mitigation
Implementation
Recheck the resource after the use call to verify that the action was taken appropriately.
Mitigation
Architecture and Design
Ensure that some environmental locking mechanism can be used to protect resources effectively.
Mitigation
Implementation
Ensure that locking occurs before the check, as opposed to afterwards, such that the resource, as checked, is the same as it is when in use.
CAPEC-27: Leveraging Race Conditions via Symbolic Links
This attack leverages the use of symbolic links (Symlinks) in order to write to sensitive files. An attacker can create a Symlink link to a target file not otherwise accessible to them. When the privileged program tries to create a temporary file with the same name as the Symlink link, it will actually write to the target file pointed to by the attackers' Symlink link. If the attacker can insert malicious content in the temporary file they will be writing to the sensitive file by using the Symlink. The race occurs because the system checks if the temporary file exists, then creates the file. The attacker would typically create the Symlink during the interval between the check and the creation of the temporary file.
CAPEC-29: Leveraging Time-of-Check and Time-of-Use (TOCTOU) Race Conditions
This attack targets a race condition occurring between the time of check (state) for a resource and the time of use of a resource. A typical example is file access. The adversary can leverage a file access race condition by "running the race", meaning that they would modify the resource between the first time the target program accesses the file and the time the target program uses the file. During that period of time, the adversary could replace or modify the file, causing the application to behave unexpectedly.