Description
Matrix Javascript SDK is the Matrix Client-Server SDK for JavaScript. Prior to version 19.7.0, an attacker cooperating with a malicious homeserver can construct messages appearing to have come from another person. Such messages will be marked with a grey shield on some platforms, but this may be missing in others. This attack is possible due to the matrix-js-sdk implementing a too permissive key forwarding strategy on the receiving end. Starting with version 19.7.0, the default policy for accepting key forwards has been made more strict in the matrix-js-sdk. matrix-js-sdk will now only accept forwarded keys in response to previously issued requests and only from own, verified devices. The SDK now sets a `trusted` flag on the decrypted message upon decryption, based on whether the key used to decrypt the message was received from a trusted source. Clients need to ensure that messages decrypted with a key with `trusted = false` are decorated appropriately, for example, by showing a warning for such messages. This attack requires coordination between a malicious homeserver and an attacker, and those who trust your homeservers do not need a workaround.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| matrix-org | matrix-js-sdk | < 19.7.0 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 11 | node-matrix-js-sdk | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 24.04 LTS | node-matrix-js-sdk | No fix yet | — |
| Ubuntu 22.04 LTS | node-matrix-js-sdk | No fix yet | — |
| Ubuntu 22.04 LTS | thunderbird | 1:102.4.2+build2-0ubuntu0.22.04.1 | USN-5724-1 |
| Ubuntu 20.04 LTS | node-matrix-js-sdk | No fix yet | — |
| Ubuntu 20.04 LTS | thunderbird | 1:102.4.2+build2-0ubuntu0.20.04.1 | USN-5724-1 |
| Ubuntu 18.04 LTS | thunderbird | 1:102.4.2+build2-0ubuntu0.18.04.1 | USN-5724-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 9 | thunderbird | 102.4.0-1.el9_0 | RHSA-2022:7178 |
| RHEL 8 | thunderbird | 102.4.0-1.el8_6 | RHSA-2022:7190 |
| RHEL 7 | thunderbird | 102.4.0-1.el7_9 | RHSA-2022:7184 |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 8.4 EUS | thunderbird | 102.4.0-1.el8_4 | RHSA-2022:7181 |
| RHEL 8.2 EUS | thunderbird | 102.4.0-1.el8_2 | RHSA-2022:7182 |
| RHEL 8.1 E4S | thunderbird | 102.4.0-1.el8_1 | RHSA-2022:7183 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 9 | thunderbird | 102.4.0-1.el9_0.alma | ALSA-2022:7178 |
| AlmaLinux 8 | thunderbird | 102.4.0-1.el8_6.alma | ALSA-2022:7190 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 8 | thunderbird | 102.4.0-1.el8_6 | RLSA-2022:7190 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP4 | MozillaThunderbird | 102.4.0-150200.8.85.1 | SUSE-SU-2022:3800-1 |
| SLES 15 SP3 | MozillaThunderbird | 102.4.0-150200.8.85.1 | SUSE-SU-2022:3800-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | MozillaThunderbird | 102.3.1-1.1 | openSUSE-SU-2024:12379-1 |
| openSUSE Tumbleweed | element-web +1 | 1.11.8-1.1 | openSUSE-SU-2024:12375-1, openSUSE-SU-2024:12374-1 |
| openSUSE Leap 15.4 | MozillaThunderbird | 102.4.0-150200.8.85.1 | SUSE-SU-2022:3800-1 |
| openSUSE Leap 15.3 | MozillaThunderbird | 102.4.0-150200.8.85.1 | SUSE-SU-2022:3800-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | element-web | 1.11.7-r0 | — |
| Alpine v3.23 | element-web | 1.11.7-r0 | — |
| Alpine v3.22 | element-web | 1.11.7-r0 | — |
| Alpine v3.21 | element-web | 1.11.7-r0 | — |
| Alpine v3.20 | element-web | 1.11.7-r0 | — |
Show 4 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | element-web | 1.11.7-r0 | — |
| Alpine v3.18 | element-web | 1.11.7-r0 | — |
| Alpine v3.17 | riot-web | 1.11.7-r0 | — |
| Alpine v3.16 | riot-web | 1.11.7-r0 | — |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2 | thunderbird | 102.4.0-1.amzn2.0.1 | ALAS2-2022-1900 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 9 | thunderbird | 102.4.0-1.el9_0 | ELSA-2022-7178 |
| Oracle Linux 8 | thunderbird | 102.4.0-1.0.1.el8_6 | ELSA-2022-7190 |
| Oracle Linux 7 | thunderbird | 102.4.0-1.0.1.el7_9 | ELSA-2022-7184 |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| npm | matrix-js-sdk | < 19.7.0 | 19.7.0 | GHSA-6263-x97c-c4gg |
Advisories 19
- ALSA-2022:7178 Important: thunderbird security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2022:7190 Important: thunderbird security update AlmaLinux Security Advisories · Oct 29, 2026
- RHSA-2022:7190 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Jun 27, 2026
- RHSA-2022:7184 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Jun 27, 2026
- RHSA-2022:7183 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Jun 27, 2026
- RHSA-2022:7181 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Jun 27, 2026
- RHSA-2022:7182 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Jun 27, 2026
- RHSA-2022:7178 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Jun 27, 2026
- USN-5724-1 thunderbird vulnerabilities Ubuntu Security Notices (USN) · Apr 27, 2026
- RLSA-2022:7190 Important: thunderbird security update Rocky Linux Security Advisories · Feb 5, 2026
- openSUSE-SU-2024:12374-1 element-desktop-1.11.8-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:12379-1 MozillaThunderbird-102.3.1-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:12375-1 element-web-1.11.8-1.1 on GA media SUSE / openSUSE Security Updates · May 7, 2025
- SUSE-SU-2022:3800-1 Security update for MozillaThunderbird SUSE / openSUSE Security Updates · May 2, 2025
- ALAS2-2022-1900 Important: thunderbird security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · May 9, 2024
- WID-SEC-2022-1589 Mozilla Thunderbird: Mehrere Schwachstellen BSI CERT-Bund (WID) · Dec 6, 2022
- ELSA-2022-7178 Important: thunderbird security update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · Oct 27, 2022
- ELSA-2022-7190 Important: thunderbird security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Oct 27, 2022
- ELSA-2022-7184 Important: thunderbird security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Oct 27, 2022
References
- https://github.com/matrix-org/matrix-js-sdk/commit/a587d7c36026fe1fcf93dfff63588abee359be76
- https://github.com/matrix-org/matrix-js-sdk/releases/tag/v19.7.0
- https://github.com/matrix-org/matrix-js-sdk/security/advisories/GHSA-6263-x97c-c4gg
- https://github.com/matrix-org/matrix-spec-proposals/pull/3061
- https://matrix.org/blog/2022/09/28/upgrade-now-to-address-encryption-vulns-in-matrix-sdks-and-clients
- GLSA-202210-35 vendor-advisory