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CVE-2026-109559

8.7 · HIGH

EdgeEver Desktop 1.6.26 through 1.112.0 contains a navigation allowlist bypass that lets attackers load arbitrary origins in the main window via string-prefix URL matching.

Published Oct 12, 2026CWE-863EPSS 0.31%

Overview

CVE-2026-109559 is a high-severity vulnerability. It was published on October 12, 2026 and has a CVSS 3.1 base score of 8.7 (HIGH).

This vulnerability has a CVSS 3.1 base score of 8.7, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical description

EdgeEver Desktop 1.6.26 through 1.112.0 contains a navigation allowlist bypass that lets attackers load arbitrary origins in the main window via string-prefix URL matching. Attackers can embed a link using userinfo syntax after the dev-server prefix, for example in a note-template preview, to obtain the edgeeverDesktop bridge including session token, sidecar RPC, and ACP channels.

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/tianma-if/edgeeverGitHubgithub.com/tianma-if/edgeever/blob/f6ade70423ba366077653dbb8ac43a677933c776/apps/desktop/src/main/index.mjs#L1560-L1564GitHubgithub.com/tianma-if/edgeever/commit/6b5027e8b4becbee0c0de7cd1a3d04af78ca87caGitHubgithub.com/tianma-if/edgeever/issues/536GitHubgithub.com/tianma-if/edgeever/issues/546Refwww.vulncheck.com/advisories/edgeever-desktop-1.6.26-through-1.112.0-navigation-allowlist-bypass-via-will-navigate

How CyberStrike helps

Frequently asked questions

What is CVE-2026-109559?

CVE-2026-109559 is a high-severity vulnerability. It was published on October 12, 2026 and has a CVSS 3.1 base score of 8.7 (HIGH).

How severe is CVE-2026-109559?

This vulnerability has a CVSS 3.1 base score of 8.7, 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-2026-109559?

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-2026-109559?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-109559 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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