Summaryinfo

A vulnerability was found in dgtlmoon changedetection.io up to 0.54.6 and classified as problematic. The impacted element is an unknown function of the component Environment Variable Handler. Executing a manipulation of the argument SALTED_PASS/PLAYWRIGHT_DRIVER_URL/HTTP_PROXY can lead to information disclosure. The identification of this vulnerability is CVE-2026-33981. The attack may be launched remotely. There is no exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability has been found in dgtlmoon changedetection.io up to 0.54.6 and classified as problematic. This vulnerability affects an unknown code of the component Environment Variable Handler. The manipulation of the argument SALTED_PASS/PLAYWRIGHT_DRIVER_URL/HTTP_PROXY 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:

changedetection.io is a free open source web page change detection tool. Prior to 0.54.7, the `jq:` and `jqraw:` include filter expressions allow use of the jq `env` builtin, which reads all process environment variables and stores them as the watch snapshot. An authenticated user (or unauthenticated user when no password is set, the default) can leak sensitive environment variables including `SALTED_PASS`, `PLAYWRIGHT_DRIVER_URL`, `HTTP_PROXY`, and any secrets passed as env vars to the container. Version 0.54.7 patches the issue.

The advisory is shared for download at github.com. This vulnerability was named CVE-2026-33981 since 03/24/2026. The exploitation appears to be easy. The attack can be initiated remotely. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1592.

Upgrading to version 0.54.7 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying the patch 65517a9c74a0cbe1a4661314470b28131ef5557f 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.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Vendor

• dgtlmoon

Name

• changedetection.io

Version

• 0.54.0
• 0.54.1
• 0.54.2
• 0.54.3
• 0.54.4
• 0.54.5
• 0.54.6

License

• open-source

Website

• Product: https://github.com/dgtlmoon/changedetection.io/

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