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CVE-2026-45245

7.4 · HIGH

Summarize prior to 0.15.1 contains a vulnerability in the hover summary feature that allows malicious pages to dispatch synthetic mouseover events over attacker-controlled links, causing the extens…

Published May 18, 2026CWE-918EPSS 0.45%

Overview

CVE-2026-45245 is a high-severity vulnerability. It was published on May 18, 2026 and has a CVSS 3.1 base score of 7.4 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.4, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

Summarize prior to 0.15.1 contains a vulnerability in the hover summary feature that allows malicious pages to dispatch synthetic mouseover events over attacker-controlled links, causing the extension to make authenticated daemon requests using stored tokens without verifying event trustworthiness. Attackers can place local or private-network URLs behind hoverable links to route authenticated requests through the daemon, potentially accessing sensitive internal endpoints when users interact with attacker-controlled content.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. 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.

References

GitHubgithub.com/steipete/summarize/commit/ecbb2c414255aa480a15d0d8b205224c14cfdbcbGitHubgithub.com/steipete/summarize/pull/218GitHubgithub.com/steipete/summarize/releases/tag/v0.15.2Refwww.vulncheck.com/advisories/summarize-unauthorized-daemon-request-via-untrusted-eventsGitHubgithub.com/steipete/summarize/pull/218

How CyberStrike helps

Frequently asked questions

What is CVE-2026-45245?

CVE-2026-45245 is a high-severity vulnerability. It was published on May 18, 2026 and has a CVSS 3.1 base score of 7.4 (HIGH).

How severe is CVE-2026-45245?

This vulnerability has a CVSS 3.1 base score of 7.4, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-45245?

Check the references section for vendor advisories, patches, and mitigation guidance. 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-2026-45245?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-45245 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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