Auth bypass in Nerimity Desktop
CVE-2026-113411
A vulnerability was found in Nerimity Desktop up to 2.2.2. Affected by this issue is the function shell.openExternal of the file src/mainWindow.js of the component Window Open Handler. The manipulation of the argument url results in improper authorization in handler for custom url scheme. The attack can be executed remotely. The exploit has been made public and could be used. Upgrading to version 2.3.3 can resolve this issue. The patch is identified as f4df21bbc290f6c1956d899cf4da9e963074a6e4. You should upgrade the affected component. The vendor was contacted early, responded in a very professional manner and quickly released a fixed version of the affected product.
Published .
CVSS v3 metric
CVSS v3 base score 6.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L.
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
- Nerimity Desktop — versions 2.2.0, 2.2.1, 2.2.2
Weakness classification (CWE)
References
- vuldb.com/vuln/422677 (technical-description, vdb-entry)
- vuldb.com/vuln/422677/cti (signature, permissions-required)
- vuldb.com/cve/CVE-2026-113411 (third-party-advisory)
- vuldb.com/submit/1013190 (third-party-advisory)
- github.com/LeoWSY-hashblue/cve-electron-2/blob/master/nerimity-desktop/cve.md (exploit)
- github.com/Nerimity/nerimity-desktop/commit/f4df21bbc290f6c1956d899cf4da9e96307… (patch, broken-link)
- github.com/Nerimity/nerimity-desktop/releases/tag/v2.3.3 (patch)
Frequently asked questions
- What is CVE-2026-113411?
- CVE-2026-113411 is a medium-severity vulnerability in Nerimity Desktop, classified under Improper Authorization. CVSS score: 6.3/10. Published 2026-10-20.
- How severe is CVE-2026-113411?
- Medium severity. CVSS v3 base score is 6.3 out of 10.