putyourlightson craft-sprig up to 2.15.1/3.15.1 Twig hashData information disclosure

Summaryinfo

A vulnerability described as problematic has been identified in putyourlightson craft-sprig up to 2.15.1/3.15.1. This vulnerability affects the function hashData of the component Twig. Executing a manipulation can lead to information disclosure. This vulnerability is registered as CVE-2026-27131. It is possible to launch the attack remotely. No exploit is available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability classified as problematic was found in putyourlightson craft-sprig up to 2.15.1/3.15.1. This vulnerability affects the function hashData of the component Twig. The manipulation with an unknown input leads to a information disclosure vulnerability. The CWE definition for the vulnerability is CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. As an impact it is known to affect confidentiality. CVE summarizes:

The Sprig Plugin for Craft CMS is a reactive Twig component framework for Craft CMS. Starting in version 2.0.0 and prior to versions 2.15.2 and 3.15.2, admin users, and users with explicit permission to access the Sprig Playground, could potentially expose the security key, credentials, and other sensitive configuration data, in addition to running the `hashData()` signing function. This issue was mitigated in versions 3.15.2 and 2.15.2 by disabling access to the Sprig Playground entirely when `devMode` is disabled, by default. It is possible to override this behavior using a new `enablePlaygroundWhenDevModeDisabled` that defaults to `false`.

The advisory is available at github.com. This vulnerability was named CVE-2026-27131 since 02/17/2026. The exploitation appears to be easy. The attack can be initiated remotely. The exploitation requires an enhanced level of successful authentication. Technical details are known, but there is no available exploit. This vulnerability is assigned to T1592 by the MITRE ATT&CK project.

Upgrading to version 2.15.2 or 3.15.2 eliminates this vulnerability. Applying the patch 09c9da2ffb45a8857829f3390ae2578e26cfe03b is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

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Productinfo

Vendor

• putyourlightson

Name

• craft-sprig

Version

• 2.15.0
• 2.15.1
• 3.15.0
• 3.15.1

License

• open-source

Website

• Product: https://github.com/putyourlightson/craft-sprig/

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