CVE-2026-44439 LookyLoo - PlaywrightCapture permits access to local files and internal network resources during page capture
Attackers can force the library to access local files or internal network resources via crafted URLs, potentially leaking sensitive data through capture outputs.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-44439?
CVE-2026-44439 is a medium-severity server-side request forgery vulnerability in Lookyloo PlaywrightCapture, published on 13 May 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
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.
Weakness: CWE-918
Which versions are affected by CVE-2026-44439?
3 open source packages ship an affected version, including playwrightcapture and PlaywrightCapture. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
playwrightcapture PyPI | All versions | 1.39.6 |
playwrightcapture PyPI | All versions | 1.39.6 |
PlaywrightCapture PyPI | All versions | 1.39.6 |
Products include Lookyloo Playwright Capture.
How do I fix CVE-2026-44439?
Upgrade playwrightcapture to 1.39.6 or later.
Upgrade, and send outbound requests through an allow-list that blocks internal addresses. More about Server-side request forgery.
Is CVE-2026-44439 being exploited?
There is no known exploitation of CVE-2026-44439 in the wild and no public exploit code.
Sources
Also known as GHSA-687h-xw6f-q2qw, PYSEC-2026-2259.