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CVE-2018-7753

9.8 · CRITICAL
Published Mar 7, 2018 mozilla CWE-20 EPSS 2.15% (81th pctl)

Overview

CVE-2018-7753 is a critical-severity vulnerability affecting mozilla bleach. It was published on March 7, 2018 and has a CVSS 3.0 base score of 9.8 (CRITICAL).

This vulnerability has a CVSS 3.0 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical Description

An issue was discovered in Bleach 2.1.x before 2.1.3. Attributes that have URI values weren't properly sanitized if the values contained character entities. Using character entities, it was possible to construct a URI value with a scheme that was not allowed that would slide through unsanitized.

Remediation

Check the references section for vendor advisories and patches from mozilla. Update bleach to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected Products

Vendor Product Versions Status

Frequently Asked Questions

What is CVE-2018-7753?

CVE-2018-7753 is a critical-severity vulnerability affecting mozilla bleach. It was published on March 7, 2018 and has a CVSS 3.0 base score of 9.8 (CRITICAL).

How severe is CVE-2018-7753?

This vulnerability has a CVSS 3.0 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2018-7753?

Check the references section for vendor advisories and patches from mozilla. Update bleach to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2018-7753?

CyberStrike's AI-powered security agents can automatically detect CVE-2018-7753 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.