HashiCorp consul-template up to 0.42.0 writeToFile path redirect

Summaryinfo

A vulnerability was found in HashiCorp consul-template up to 0.42.0 and classified as problematic. Affected by this issue is the function writeToFile of the component writeToFile. Such manipulation of the argument path leads to redirect. This vulnerability is uniquely identified as CVE-2026-14361. The attack can be launched remotely. No exploit exists.

Detailsinfo

A vulnerability was found in HashiCorp consul-template up to 0.42.0. It has been rated as problematic. Affected by this issue is the function writeToFile of the component writeToFile. The manipulation of the argument path with an unknown input leads to a redirect vulnerability. Using CWE to declare the problem leads to CWE-601. A web application accepts a user-controlled input that specifies a link to an external site, and uses that link in a Redirect. This simplifies phishing attacks. Impacted is integrity. CVE summarizes:

The consul-template library before version 0.42.1 is vulnerable to a path redirection issue in the writeToFile template helper that may allow template output to be written outside the intended directory or to overwrite an existing file. This vulnerability (CVE-2026-14361) is fixed in consul-template 0.42.1.

The advisory is available at discuss.hashicorp.com. This vulnerability is handled as CVE-2026-14361 since 07/01/2026. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. Successful exploitation requires user interaction by the victim. Technical details are known, but there is no available exploit. This vulnerability is assigned to T1204.001 by the MITRE ATT&CK project.

Upgrading to version 0.42.1 eliminates this vulnerability.

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Productinfo

Vendor

• HashiCorp

Name

• consul-template

Version

• 0.1
• 0.2
• 0.3
• 0.4
• 0.5
• 0.6
• 0.7
• 0.8
• 0.9
• 0.10
• 0.11
• 0.12
• 0.13
• 0.14
• 0.15
• 0.16
• 0.17
• 0.18
• 0.19
• 0.20
• 0.21
• 0.22
• 0.23
• 0.24
• 0.25
• 0.26
• 0.27
• 0.28
• 0.29
• 0.30
• 0.31
• 0.32
• 0.33
• 0.34
• 0.35
• 0.36
• 0.37
• 0.38
• 0.39
• 0.40
• 0.41
• 0.42.0

License

• open-source

CPE 2.3info

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CPE 2.2info

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