CVE-2026-44439: PlaywrightCapture Remote Code Execution Vulnerability

MODERATE
Advisory Identifier: GHSA-687h-xw6f-q2qw
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CVSS 7.5
CWE-918
Published
Advisory Summary

CVE-2026-44439 is a MODERATE (CVSS 7.5) remote code execution vulnerability (CWE-918: Server-Side Request Forgery (SSRF)) affecting PlaywrightCapture libraries in the PyPI ecosystem. The issue involves playwright capture permits access to local files and internal network resources during page capture. Remediation is available by upgrading affected packages to version 1.39.6.

CVE-2026-44439 at a Glance

CVE Identifier CVE-2026-44439
GHSA Identifier GHSA-687h-xw6f-q2qw
Severity MODERATE
CVSS v3.1 Base Score 7.5
CWE Classification CWE-918: Server-Side Request Forgery (SSRF)
Affected Product PlaywrightCapture
Package Ecosystem PyPI
Published Date
Last Updated

Security Impact

CVSS: 7.5

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality High (C:H)
Integrity None (I:N)
Availability None (A:N)

How to Fix CVE-2026-44439

To remediate this vulnerability, upgrade all affected PlaywrightCapture dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

PlaywrightCapture fixed: 1.39.6 
pip install PlaywrightCapture>=1.39.6
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

pip show PlaywrightCapture

How to Check if You Are Affected

To determine whether your Python environment is affected by CVE-2026-44439, inspect your installed packages using pip:

pip show PlaywrightCapture

Analyze the terminal output to locate any version of PlaywrightCapture in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1.39.6), your application is affected.

Note: The pip show PlaywrightCapture command checks currently installed packages in your active Python environment.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-918: Server-Side Request Forgery (SSRF), where 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. In PlaywrightCapture, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

Playwright Capture 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. The patch mitigates the issue by introducing request routing checks that block secondary requests to local files, non-global IP addresses, and .local domains when only_global_lookup is enabled, while still allowing the originally requested capture URL.

CVE-2026-44439 Affected PlaywrightCapture Versions

1 component(s)
Fixed Versions:
1.39.6
Product / Package Ecosystem Affected Versions Fixed Version
PlaywrightCapture
pypi/PlaywrightCapture
PyPI
< 1.39.6
1.39.6

References

GitHub Advisory / Wiki ADVISORY
https://github.com/Lookyloo/PlaywrightCapture/security/advisories/GHSA-687h-xw6f-q2qw
NVD — CVE-2026-44439 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-44439
Security Fix Commit FIX COMMIT
https://github.com/Lookyloo/PlaywrightCapture/commit/49e289eba756e4fbac1322c33cfd111411562405
PlaywrightCapture Source Repository REPOSITORY
https://github.com/Lookyloo/PlaywrightCapture

Frequently Asked Questions

What is CVE-2026-44439?
CVE-2026-44439 is a security vulnerability in PlaywrightCapture involving Playwright Capture permits access to local files and internal network resources during page capture under CWE-918: Server-Side Request Forgery (SSRF).
Which PlaywrightCapture versions are affected?
Affected versions include releases prior to 1.39.6 across affected packages: PlaywrightCapture.
What version fixes CVE-2026-44439?
Upgrading to 1.39.6 (or the latest patched release for your respective branch) resolves the vulnerability.
Is PlaywrightCapture affected?
Yes, PlaywrightCapture is affected in releases prior to 1.39.6. Upgrade your dependency to 1.39.6 or later.
What is the CVSS score of CVE-2026-44439?
CVE-2026-44439 has a CVSS v3.1 base score of 7.5 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
What CWE is associated with CVE-2026-44439?
CVE-2026-44439 is classified under CWE-918: Server-Side Request Forgery (SSRF) (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.).
How can I check PyPI dependencies for CVE-2026-44439?
Run the dependency tree command: 'pip show PlaywrightCapture'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-687h-xw6f-q2qw",
  "modified" : "2026-06-09T01:59:13Z",
  "published" : "2026-05-06T23:43:36Z",
  "aliases" : [ "CVE-2026-44439" ],
  "summary" : "Playwright Capture permits access to local files and internal network resources during page capture",
  "details" : "Playwright Capture 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. The patch mitigates the issue by introducing request routing checks that block secondary requests to local files, non-global IP addresses, and .local domains when only_global_lookup is enabled, while still allowing the originally requested capture URL.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"
  }, {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "PlaywrightCapture"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1.39.6"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/Lookyloo/PlaywrightCapture/security/advisories/GHSA-687h-xw6f-q2qw"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-44439"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/Lookyloo/PlaywrightCapture/commit/49e289eba756e4fbac1322c33cfd111411562405"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/Lookyloo/PlaywrightCapture"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-918" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-05-06T23:43:36Z",
    "nvd_published_at" : "2026-05-13T22:16:44Z"
  }
}