What’s Vulnerable › Vulnerabilities

CVE-2019-11185

• Severity: critical (CVSS 9.8 v3.0)
• 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: 2019-06-03 · updated 2026-06-17
• Weakness: CWE-434

Description

The WP Live Chat Support Pro plugin through 8.0.26 for WordPress contains an arbitrary file upload vulnerability. This results from an incomplete patch for CVE-2018-12426. Arbitrary file upload is achieved by using a non-blacklisted executable file extension in conjunction with a whitelisted file extension, and prepending "magic bytes" to the payload to pass MIME checks. Specifically, an unauthenticated remote user submits a crafted file upload POST request to the REST api remote_upload endpoint. The file contains data that will fool the plugin's MIME check into classifying it as an image (which is a whitelisted file extension) and finally a trailing .phtml file extension.

Affected products

• CODECABIN_ WP Live Chat Support: before 8.0.26 — fixed in 8.0.26

How to fix

Upgrade to a fixed version: CODECABIN_ WP Live Chat Support 8.0.26. Check the vendor advisory for mitigations.

References

• https://wordpress.org/plugins/wp-live-chat-support/#developers
• https://wp-livechat.com/
• https://wpvulndb.com/vulnerabilities/9320
• https://wordpress.org/plugins/wp-live-chat-support/#developers
• https://wp-livechat.com/
• https://wpvulndb.com/vulnerabilities/9320

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