Lookyloo PlaywrightCapture up to 1.39.5 server-side request forgery

Summaryinfo

A vulnerability categorized as critical has been discovered in Lookyloo PlaywrightCapture up to 1.39.5. The affected element is an unknown function. The manipulation results in server-side request forgery. This vulnerability was named CVE-2026-44439. The attack may be performed from remote. There is no available exploit. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical has been found in Lookyloo PlaywrightCapture up to 1.39.5. Affected is an unknown functionality. The manipulation with an unknown input leads to a server-side request forgery vulnerability. CWE is classifying the issue as CWE-918. The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

PlaywrightCapture is a simple replacement for splash using playwright. Prior to 1.39.6, PlaywrightCapture did not sufficiently restrict navigations and resource requests initiated by rendered pages. An attacker-controlled page could abuse browser-side redirection mechanisms, such as window.location.href, to make the capture process open file:// URLs or request resources hosted on private, loopback, link-local, or otherwise non-public IP addresses. In deployments where PlaywrightCapture processes untrusted URLs, this could allow a remote attacker to perform server-side request forgery against internal services or attempt to access local files from the capture environment. Depending on what capture artifacts are generated and exposed, responses from those resources could potentially be leaked through screenshots, saved page content, logs, or other capture outputs. This vulnerability is fixed in 1.39.6.

The advisory is available at github.com. This vulnerability is traded as CVE-2026-44439 since 05/06/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. The technical details are unknown and an exploit is not available.

Upgrading to version 1.39.6 eliminates this vulnerability. Applying the patch 49e289eba756e4fbac1322c33cfd111411562405 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

• Lookyloo

Name

• PlaywrightCapture

Version

• 1.39.0
• 1.39.1
• 1.39.2
• 1.39.3
• 1.39.4
• 1.39.5

License

• open-source

Website

• Product: https://github.com/Lookyloo/PlaywrightCapture/

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