Descriptionnheko 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.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
nheko (PTS)buster0.6.3-2fixed
sid, bookworm0.11.3-2fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
nhekosourcebuster(not affected)
nhekosourcebullseye(not affected)


[bullseye] - nheko <not-affected> (Vulnerable code not present)
[buster] - nheko <not-affected> (Vulnerable code not present) (v0.10.2)
Support for secrets in keychain: (v0.8.0)

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