CVE-2026-16766: Command Injection (CVSS 9.8)

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.

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CVSS v3.1 Score

9.8

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS — Exploit Prediction

0.0130

Probability of exploitation

0.68%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-78 OS Command Injection

References

Other References

https://github.com/mc7244/Catalyst-View-Wkhtmltopdf/issues/6 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 http://www.openwall.com/lists/oss-security/2026/07/25/4

Frequently Asked Questions

What is CVE-2026-16766? +

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. It has a CVSS v3.1 base score of 9.8 (CRITICAL).

How severe is CVE-2026-16766? +

CVE-2026-16766 has a CVSS v3.1 score of 9.8 out of 10, rated CRITICAL. This is a critical vulnerability that should be patched immediately. The EPSS score is 0.0130, placing it in the 1th percentile for exploitation probability.

How do I check if I'm vulnerable to CVE-2026-16766? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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