Auth bypass in Tianma-If Edgeever
CVE-2026-109559
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.
Vulnerability class: Broken Access Control
Published .
CVSS v3 metric
CVSS v3 base score 8.7 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- github.com/tianma-if/edgeever/issues/536 (issue-tracking)
- github.com/tianma-if/edgeever/issues/546 (issue-tracking)
- github.com/tianma-if/edgeever/commit/6b5027e8b4becbee0c0de7cd1a3d04af78ca87ca (patch)
- github.com/tianma-if/edgeever/blob/f6ade70423ba366077653dbb8ac43a677933c776/app… (technical-description)
- github.com/tianma-if/edgeever (product)
- www.vulncheck.com/advisories/edgeever-desktop-1.6.26-through-1.112.0-navigation… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-109559?
- CVE-2026-109559 is a high-severity vulnerability in Tianma-If Edgeever, classified under Incorrect Authorization. CVSS score: 8.7/10. Published 2026-10-12.
- How severe is CVE-2026-109559?
- High severity. CVSS v3 base score is 8.7 out of 10.