CVE-2022-39264
nheko vulnerable to secret poisoning using MITM on secret requests by the homeserver
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- High
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
8.6
nheko vulnerable to secret poisoning using MITM on secret requests by the homeserver
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.
- Record
CVE-2022-39264- CVSS 3.1
- 8.6 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N - Weakness
- CWE-295, CWE-287
- Updated
- 2026-11-02
EUVDEUVD-2022-41773
8.6
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.
- Record
EUVD-2022-41773- CVSS 3.1
- 8.6 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N - Updated
- 2026-11-02
NVD
8.6
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.
- Record
CVE-2022-39264- CVSS 3.1
- 8.6 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N - CVSS 3.1
- 5.9 Medium
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N - Weakness
- CWE-287, CWE-295
- Updated
- 2026-11-02
OSVALPINE-CVE-2022-39264
5.9
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.
- Record
ALPINE-CVE-2022-39264- CVSS 3.1
- 5.9 Medium
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N - Updated
- 2026-11-03
OSV
8.6
nheko vulnerable to secret poisoning using MITM on secret requests by the homeserver
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.
- Record
CVE-2022-39264- CVSS 3.1
- 8.6 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N - Weakness
- CWE-287, CWE-295
- Updated
- 2026-11-02
OSVDEBIAN-CVE-2022-39264
5.9
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.
- Record
DEBIAN-CVE-2022-39264- CVSS 3.1
- 5.9 Medium
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N - Updated
- 2026-11-03
OSVUBUNTU-CVE-2022-39264
8.6
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.
- Record
UBUNTU-CVE-2022-39264- CVSS 3.1
- 8.6 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N - CVSS 3.1
- 5.9 Medium
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N - Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
nhekoAlpine:v3.16 |
before 0.9.3-r2 | 0.9.3-r2 |
nhekoDebian:12 |
before 0.10.2-1 | 0.10.2-1 |
nhekoDebian:13 |
before 0.10.2-1 | 0.10.2-1 |
nhekoDebian:14 |
before 0.10.2-1 | 0.10.2-1 |
nhekoUbuntu:18.04:LTS |
All versions, plus listed versions 0.0+git20171116.21fdb26-10.0+git20171116.21fdb26-2 |
None known |
nhekoUbuntu:20.04:LTS |
All versions, plus listed versions 0.6.4-20.6.4-2build10.6.4-2build2 |
None known |
nhekoUbuntu:22.04:LTS |
All versions, plus listed versions 0.8.0+really0.7.2-40.8.2-2build10.9.0-10.9.0-1build10.9.1-1 |
None known |
nhekoUbuntu:24.04:LTS |
All versions, plus listed versions 0.11.3-2build10.11.3-2build20.11.3-2.10.11.3-2.1build10.11.3+~0.9.2+~1.0.0+~0.3.0-1build30.11.3+~0.9.2+~1.0.0+~0.3.0-1build4 |
None known |
nhekoUbuntu:25.10 |
All versions, plus listed versions 0.12.0+~0.10.0+~1.0.0+~0.3.1-4build20.12.0+~0.10.0+~1.0.0+~0.3.1-4build30.12.1+~0.10.1+~1.0.0+~0.3.1-10.12.1+~0.10.1+~1.0.0+~0.3.1-1build10.12.1+~0.10.1+~1.0.0+~0.3.1-2 |
None known |
nhekoUbuntu:26.10 |
All versions, plus listed versions 0.12.1+~0.10.1+~1.0.0+~0.3.1-4ubuntu30.12.1-1+ds+~0.10.1+ds+~1.0.0+ds+~0.3.2+ds-1build30.12.1-1+ds+~0.10.1+ds+~1.0.0+ds+~0.3.2+ds-1build4 |
None known |
nhekoUbuntu:26.04:LTS |
All versions, plus listed versions 0.12.1+~0.10.1+~1.0.0+~0.3.1-20.12.1+~0.10.1+~1.0.0+~0.3.1-4ubuntu3 |
None known |
History
| Recorded | Changed | Sources |
|---|---|---|
| affected, aliases, references | OSV | |
| first indexed | CVE List, EUVD, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2022-39264 is a high vulnerability (CVSS 8.6) in Nheko-reborn Nheko, published September 28, 2022. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.82%, the 57th percentile. Fixed in nheko 0.9.3-r2.
References
github.com/Nheko-Reborn/nheko/security/advisories/GHSA-8jcp-8jq4-5mm7
github.com/Nheko-Reborn/nheko/commit/67bee15a389f9b8a9f6c3a340558d1e2319e7199
github.com/Nheko-Reborn/nheko/releases/tag/v0.10.2
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YBOL6OOQGPZD2RLYT4EHAWTFXNIHLYEN
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TA6A5ADUVAYKD3ZFLF2JPZOTIOFJOEU7
security.alpinelinux.org/vuln/CVE-2022-39264