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CWE-377
Insecure Temporary File
Creating and using insecure temporary files can leave application and system data vulnerable to attack.
CVE-2026-25701 (GCVE-0-2026-25701)
Vulnerability from cvelistv5 – Published: 2026-02-25 10:59 – Updated: 2026-02-25 20:50
VLAI
Summary
An Insecure Temporary File vulnerability in openSUSE sdbootutil allows local users to pre-create a directory to achieve various effects like:
* gain access to possible private information found in /var/lib/pcrlock.d
* manipulate the data backed up in /tmp/pcrlock.d.bak, therefore violating the integrity of the data should it be restored.
* overwrite protected system files with data from /var/lib/pcrlock.d by placing symlinks to existing files in the directory tree in /tmp/pcrlock.d.bak.
This issue affects sdbootutil: from ? before 5880246d3a02642dc68f5c8cb474bf63cdb56bca.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-377 - Insecure Temporary File
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| openSUSE | sdbootutil |
Affected:
? , < 5880246d3a02642dc68f5c8cb474bf63cdb56bca
(git)
|
Date Public
2026-02-18 08:18
Credits
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CVE-2026-35342 (GCVE-0-2026-35342)
Vulnerability from cvelistv5 – Published: 2026-04-22 16:07 – Updated: 2026-04-22 18:15
VLAI
Title
uutils coreutils mktemp Insecure Temporary File Placement via Empty TMPDIR
Summary
The mktemp utility in uutils coreutils fails to properly handle an empty TMPDIR environment variable. Unlike GNU mktemp, which falls back to /tmp when TMPDIR is an empty string, the uutils implementation treats the empty string as a valid path. This causes temporary files to be created in the current working directory (CWD) instead of the intended secure temporary directory. If the CWD is more permissive or accessible to other users than /tmp, it may lead to unintended information disclosure or unauthorized access to temporary data.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-377 - Insecure Temporary File
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/uutils/coreutils/pull/10566 | patchissue-tracking |
| https://github.com/uutils/coreutils/releases/tag/0.6.0 | vendor-advisory |
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CVE-2026-40973 (GCVE-0-2026-40973)
Vulnerability from cvelistv5 – Published: 2026-04-27 23:29 – Updated: 2026-04-29 03:55
VLAI
Summary
A local attacker on the same host as the application may be able to take control of the directory used by `ApplicationTemp`. When `server.servlet.session.persistent` is set to `true` and the attack persists across application restarts, this may allow the attacker to read session information and hijack authenticated users or deploy a gadget chain and execute code as the application's user.
Affected: Spring Boot 4.0.0–4.0.5 (fix 4.0.6), 3.5.0–3.5.13 (fix 3.5.14), 3.4.0–3.4.15 (fix 3.4.16), 3.3.0–3.3.18 (fix 3.3.19), 2.7.0–2.7.32 (fix 2.7.33); predictable temp directory / `ApplicationTemp` ownership verification. Versions that are no longer supported are also affected per vendor advisory.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-377 - Insecure Temporary File
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Spring | Spring Boot |
Affected:
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(custom)
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CVE-2026-40979 (GCVE-0-2026-40979)
Vulnerability from cvelistv5 – Published: 2026-04-28 07:31 – Updated: 2026-04-28 12:33
VLAI
Summary
In Spring AI, having access to a shared environment can expose the ONNX model used by the application.
Affected versions:
Spring AI: 1.0.0 - 1.0.5 (fixed in 1.0.6), 1.1.0 - 1.1.4 (fixed in 1.1.5)
Severity
6.1 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-377 - Insecure Temporary File
Assigner
References
1 reference
Impacted products
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CVE-2026-41001 (GCVE-0-2026-41001)
Vulnerability from cvelistv5 – Published: 2026-06-11 05:04 – Updated: 2026-06-23 19:54
VLAI
Title
Predictable Temp Directory in Artemis Auto-configuration
Summary
Spring Boot's ArtemisEmbeddedConfigurationFactory uses a fixed, static path for the embedded Artemis message broker's data directory when no explicit path is configured. A local attacker on the same host can pre-create this predictable directory or place a symlink before the application starts.
Affected versions:
Spring Boot 4.0.0 through 4.0.6; 3.5.0 through 3.5.14; 3.4.0 through 3.4.16; 3.3.0 through 3.3.19; 2.7.0 through 2.7.33.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-377 - Insecure Temporary File
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Spring | Spring Boot |
Affected:
4.0.0 , < 4.0.6.1
(custom)
Affected: 3.5.0 , < 3.5.14.1 (custom) Affected: 3.4.0 , < 3.4.17 (custom) Affected: 3.3.0 , < 3.3.20 (custom) Affected: 2.7.0 , < 2.7.34 (custom) |
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CVE-2026-41991 (GCVE-0-2026-41991)
Vulnerability from cvelistv5 – Published: 2026-06-29 10:15 – Updated: 2026-06-29 13:31 X_Open Source
VLAI
Title
Predictable Temporary File in GNU gzip
Summary
GNU gzip contains a vulnerability in the gzexe utility related to insecure temporary file handling. When the mktemp utility is not available in the user’s PATH, gzexe falls back to constructing a temporary file path based solely on the process ID (PID). This predictable filename is created without exclusive access or existence checks.
A local attacker can pre‑create the predicted temporary file path as a symbolic link pointing to an arbitrary file writable by the victim. When gzexe runs, it follows the symlink and overwrites the target file, resulting in a time‑of‑check to time‑of‑use (TOCTOU) condition that allows arbitrary file overwrite.
This issue has been fixed in the commit 4e6f8b24ab823146ab8776f0b7fe486ab34d4269
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-377 - Insecure Temporary File
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://cert.pl/en/posts/2026/04/CVE-2026-41991/ | third-party-advisory |
| https://www.gnu.org/software/gzip/ | product |
| https://cgit.git.savannah.gnu.org/cgit/gzip.git/c… | patch |
Credits
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CVE-2026-45384 (GCVE-0-2026-45384)
Vulnerability from cvelistv5 – Published: 2026-06-10 20:00 – Updated: 2026-06-11 13:38
VLAI
Title
bit7z: Arbitrary File Overwrite via Symlink Attack on Predictable Temp File During Archive Update
Summary
bit7z is a cross-platform C++ static library that allows the compression/extraction of archive files. Prior to version 4.0.12, there is an arbitrary file overwrite vulnerability via symlink attack on predictable temp files during archive update. This issue has been patched in version 4.0.12.
Severity
6.1 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/rikyoz/bit7z/security/advisori… | x_refsource_CONFIRM |
| https://github.com/rikyoz/bit7z/releases/tag/v4.0.12 | x_refsource_MISC |
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CVE-2026-46406 (GCVE-0-2026-46406)
Vulnerability from cvelistv5 – Published: 2026-06-29 14:03 – Updated: 2026-06-29 15:26
VLAI
Title
Claude Code: Insecure Temporary File in /copy Command Enables Response Disclosure and Symlink-Based File Write
Summary
Claude Code is an agentic coding tool. From 2.1.59 until 2.1.128, the Claude Code /copy command wrote responses to a hardcoded, predictable path (/tmp/claude/response.md) without UID isolation, randomness, or symlink protection. The file was created world-readable (0644) in a world-traversable directory (0755), allowing any local user to read a privileged user's Claude response, which could contain secrets or credentials. Additionally, because the path was static and predictable, a local attacker could pre-create the directory and plant a symlink at the expected file path, causing the privileged process to follow the symlink and overwrite an attacker-chosen file with the response text. Exploiting this required a local unprivileged user on the same system and a privileged user to run the /copy command. This vulnerability is fixed in 2.1.128.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/anthropics/claude-code/securit… | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| anthropics | claude-code |
Affected:
>= 2.1.59, < 2.1.128
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CVE-2026-4822 (GCVE-0-2026-4822)
Vulnerability from cvelistv5 – Published: 2026-03-25 20:31 – Updated: 2026-03-28 01:48
VLAI
Title
Enter Software Iperius Backup Backup Service temp file
Summary
A vulnerability was detected in Enter Software Iperius Backup up to 8.7.3. Affected is an unknown function of the file C:\ProgramData\IperiusBackup\Jobs\ of the component Backup Service. Performing a manipulation results in creation of temporary file with insecure permissions. The attack is only possible with local access. A high degree of complexity is needed for the attack. The exploitability is told to be difficult. The exploit is now public and may be used. Upgrading to version 8.7.4 is able to address this issue. It is recommended to upgrade the affected component. The vendor was contacted early, responded in a very professional manner and quickly released a fixed version of the affected product.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://vuldb.com/?id.353122 | vdb-entry |
| https://vuldb.com/?ctiid.353122 | signaturepermissions-required |
| https://vuldb.com/?submit.774209 | third-party-advisory |
| https://github.com/0truust/iperius-backup-securit… | exploit |
| https://www.iperiusbackup.com/download-software-b… | patch |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Enter Software | Iperius Backup |
Affected:
8.7.0
Affected: 8.7.1 Affected: 8.7.2 Affected: 8.7.3 Unaffected: 8.7.4 |
Credits
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CVE-2026-49134 (GCVE-0-2026-49134)
Vulnerability from cvelistv5 – Published: 2026-06-01 18:53 – Updated: 2026-06-02 12:39 X_Open Source
VLAI
Title
CodexBar < 0.32.0 Privilege Escalation via CLI Installer Temp File
Summary
CodexBar prior to 0.32.0 contains a privilege escalation vulnerability in the CLI installer that allows local attackers to execute arbitrary commands as root by exploiting a race condition in temporary file handling. The installer creates a temporary file with mktemp, writes a privileged shell payload into it, and executes it with administrator privileges via bash, allowing a same-user local process to rewrite the installer body before the administrator prompt is approved, causing attacker-controlled commands to run as root.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-377 - Insecure Temporary File
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/steipete/CodexBar/releases/tag… | release-notes |
| https://github.com/steipete/CodexBar/pull/1222 | issue-tracking |
| https://github.com/steipete/CodexBar/commit/dbc94… | patch |
| https://www.vulncheck.com/advisories/codexbar-pri… | third-party-advisory |
Impacted products
Date Public
2026-05-30 00:00
Credits
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No mitigation information available for this CWE.
CAPEC-149: Explore for Predictable Temporary File Names
An attacker explores a target to identify the names and locations of predictable temporary files for the purpose of launching further attacks against the target. This involves analyzing naming conventions and storage locations of the temporary files created by a target application. If an attacker can predict the names of temporary files they can use this information to mount other attacks, such as information gathering and symlink attacks.
CAPEC-155: Screen Temporary Files for Sensitive Information
An adversary exploits the temporary, insecure storage of information by monitoring the content of files used to store temp data during an application's routine execution flow. Many applications use temporary files to accelerate processing or to provide records of state across multiple executions of the application. Sometimes, however, these temporary files may end up storing sensitive information. By screening an application's temporary files, an adversary might be able to discover such sensitive information. For example, web browsers often cache content to accelerate subsequent lookups. If the content contains sensitive information then the adversary could recover this from the web cache.