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Fencer Vulns
medium 4.3

CVE-2022-39236 json

Matrix Javascript SDK improper beacon events can cause availability issues

published 2022-09-28 4 y ago modified 2026-06-17 4 mo ago also GHSA-hvv8-5v86-r45x , EUVD-2022-6842

cvss
4.3
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
1.4%
EPSS 1.4% chance of exploitation in 30 days, percentile 71%
public exploits
0
none known

Summary

Matrix Javascript SDK is the Matrix Client-Server SDK for JavaScript. Starting with version 17.1.0-rc.1, improperly formed beacon events can disrupt or impede the matrix-js-sdk from functioning properly, potentially impacting the consumer's ability to process data safely. Note that the matrix-js-sdk can appear to be operating normally but be excluding or corrupting runtime data presented to the consumer. This is patched in matrix-js-sdk v19.7.0. Redacting applicable events, waiting for the sync processor to store data, and restarting the client are possible workarounds. Alternatively, redacting the applicable events and clearing all storage will fix the further perceived issues. Downgrading to an unaffected version, noting that such a version may be subject to other vulnerabilities, will additionally resolve the issue.

Patch / fix

  • npm matrix-js-sdk 19.7.0
  • matrix javascript_sdk 19.7.0
  • thunderbird Ubuntu 18.04 LTS 1:102.4.2+build2-0ubuntu0.18.04.1
  • thunderbird Ubuntu 20.04 LTS 1:102.4.2+build2-0ubuntu0.20.04.1
  • thunderbird Ubuntu 22.04 LTS 1:102.4.2+build2-0ubuntu0.22.04.1

ubuntu advisories UBUNTU-CVE-2022-39236

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • thunderbird RHEL 9 102.4.0-1.el9_0
  • thunderbird RHEL 7 102.4.0-1.el7_9
  • thunderbird RHEL 8 102.4.0-1.el8_6
  • thunderbird RHEL 8.4 EUS 102.4.0-1.el8_4
  • thunderbird RHEL 8.1 E4S 102.4.0-1.el8_1
  • thunderbird RHEL 8.2 EUS 102.4.0-1.el8_2

red hat advisories RHSA-2022:7178RHSA-2022:7181RHSA-2022:7184RHSA-2022:7183RHSA-2022:7190RHSA-2022:7182

  • MozillaThunderbird SLE Workstation Extension 15 SP4, SLE Workstation Extension 15 SP3, SLE Module for Package Hub 15 SP4 +3 more 102.4.0-150200.8.85.1

suse advisories SUSE-SU-2022:3800-1

  • element-desktop openSUSE Tumbleweed 1.11.8-1.1
  • element-web openSUSE Tumbleweed 1.11.8-1.1
  • MozillaThunderbird openSUSE Tumbleweed 102.3.1-1.1

opensuse advisories openSUSE-SU-2024:12374-1openSUSE-SU-2024:12375-1openSUSE-SU-2024:12379-1

  • thunderbird AlmaLinux 9 102.4.0-1.el9_0.alma
  • thunderbird AlmaLinux 8 102.4.0-1.el8_6.alma

almalinux advisories ALSA-2022:7178ALSA-2022:7190

  • thunderbird Rocky Linux 8 102.4.0-1.el8_6
  • thunderbird Rocky Linux 8 102.4.0-1.el8_6.0.1

rocky linux advisories RLSA-2022:7190

  • riot-web Alpine 3.17, Alpine 3.16 1.11.7-r0
  • element-web Alpine 3.24, Alpine 3.23, Alpine 3.22 +4 more 1.11.7-r0

alpine advisories ALPINE-CVE-2022-39236

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2022-39236 updated cvss 4.3

Mozilla: Matrix SDK bundled with Thunderbird vulnerable to a data corruption issue

  • Red Hat Enterprise Linux 6 thunderbird
    affected: no fix planned “Out of support scope”
  • Red Hat Enterprise Linux AppStream (v. 8) thunderbird 102.4.0-1.el8_6
    fixed: vendor fix RHSA-2022:7190
  • Red Hat Enterprise Linux AppStream (v. 9) thunderbird 102.4.0-1.el9_0
    fixed: vendor fix RHSA-2022:7178
  • Red Hat Enterprise Linux AppStream E4S (v. 8.1) thunderbird 102.4.0-1.el8_1
    fixed: vendor fix RHSA-2022:7183
  • Red Hat Enterprise Linux AppStream EUS (v. 8.2) thunderbird 102.4.0-1.el8_2
    fixed: vendor fix RHSA-2022:7182
  • Red Hat Enterprise Linux AppStream EUS (v.8.4) thunderbird 102.4.0-1.el8_4
    fixed: vendor fix RHSA-2022:7181
  • Red Hat Enterprise Linux Client (v. 7) thunderbird 102.4.0-1.el7_9 Red Hat Enterprise Linux Server Optional (v. 7) thunderbird 102.4.0-1.el7_9 Red Hat Enterprise Linux Workstation (v. 7) thunderbird 102.4.0-1.el7_9
    fixed: vendor fix RHSA-2022:7184

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
18 mo ago

Exploit prediction

1.36% chance of exploitation in the next 30 days, higher than 71% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 4.3 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
NVD 3.1 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
GitHub 3.1 4.3 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

Affected packages

ecosystem package affected fixed in
npm matrix-js-sdk
>=17.1.0-rc.1, <19.7.0
19.7.0

Affected products

  • matrix-org matrix-js-sdk

Classification

Weakness
  • CWE-20 Improper Input Validation

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.