CVE-2020-26239
7.6 · HIGHOverview
CVE-2020-26239 is a high-severity vulnerability affecting scratchaddons scratch_addons. It was published on November 23, 2020 and has a CVSS 3.1 base score of 7.6 (HIGH).
This vulnerability has a CVSS 3.1 base score of 7.6, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
Technical Description
Scratch Addons is a WebExtension that supports both Chrome and Firefox. Scratch Addons before version 1.3.2 is vulnerable to DOM-based XSS. If the victim visited a specific website, the More Links addon of the Scratch Addons extension used incorrect regular expression which caused the HTML-escaped values to be unescaped, leading to XSS. Scratch Addons version 1.3.2 fixes the bug. The extension will be automatically updated by the browser. More Links addon can be disabled via the option of the extension.
Remediation
Check the references section for vendor advisories and patches from scratchaddons. Update scratch_addons 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 |
|---|---|---|---|
| scratchaddons | scratch_addons | >= 0, < 1.3.2 | Affected |
References
Frequently Asked Questions
What is CVE-2020-26239?
CVE-2020-26239 is a high-severity vulnerability affecting scratchaddons scratch_addons. It was published on November 23, 2020 and has a CVSS 3.1 base score of 7.6 (HIGH).
How severe is CVE-2020-26239?
This vulnerability has a CVSS 3.1 base score of 7.6, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
How do I fix or remediate CVE-2020-26239?
Check the references section for vendor advisories and patches from scratchaddons. Update scratch_addons 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-2020-26239?
CyberStrike's AI-powered security agents can automatically detect CVE-2020-26239 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.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
Automated penetration testing that runs continuously, not just quarterly.
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