CVE-2021-24684: PDF Light Viewer < 1.4.12 - Authenticated Command Injection

Severity: high (CVSS 8.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 4.3% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2021-10-18 · updated 2026-06-17
Weakness: CWE-78

Description

The WordPress PDF Light Viewer Plugin WordPress plugin before 1.4.12 allows users with Author roles to execute arbitrary OS command on the server via OS Command Injection when invoking Ghostscript.

Affected products

WordPress PDF Light Viewer Plugin: before 1.4.12 — fixed in 1.4.12

How to fix

Upgrade to a fixed version: WordPress PDF Light Viewer Plugin 1.4.12. Check the vendor advisory for mitigations.

References

https://wpscan.com/vulnerability/b5295bf9-8cf6-416e-b215-074742a5fc63
https://wpscan.com/vulnerability/b5295bf9-8cf6-416e-b215-074742a5fc63

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