Auth bypass in Nheko-Reborn Nheko
CVE-2022-39264
nheko is a desktop client for the Matrix communication application. All versions below 0.10.2 are vulnerable homeservers inserting malicious secrets, which could lead to man-in-the-middle attacks. Users can upgrade to version 0.10.2 to protect against this issue. As a workaround, one may apply the patch manually, avoid doing verifications of one's own devices, and/or avoid pressing the request button in the settings menu.
Vulnerability class: Broken Authentication
EPSS: 0.006 (47.0th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.6 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N.
Affected products
- Nheko-reborn Nheko — versions < 0.10.2
- Fedoraproject Fedora — versions 36, 37
Weakness classification (CWE)
References
- security-advisories@github.com (Patch, Third Party Advisory)
- security-advisories@github.com (Patch)
- security-advisories@github.com (Release Notes)
- security-advisories@github.com (vendor-advisory)
- security-advisories@github.com (vendor-advisory)
Frequently asked questions
- What is CVE-2022-39264?
- CVE-2022-39264 is a high-severity vulnerability in Nheko-Reborn Nheko, classified under Improper Authentication. CVSS score: 8.6/10. Published 2022-09-28.
- How severe is CVE-2022-39264?
- High severity. CVSS v3 base score is 8.6 out of 10.