matrix-js-sdk has insufficient validation when considering a room to be upgraded by another
Impact
matrix-js-sdk before 38.2.0 has insufficient validation of room predecessor links in MatrixClient::getJoinedRooms, allowing a remote attacker to attempt to replace a tombstoned room with an unrelated attacker-supplied room.
Patches
The issue has been patched and users should upgrade to 38.2.0.
Workarounds
Avoid using MatrixClient::getJoinedRooms in favour of getRooms() and filtering upgraded rooms separately.
Affected software
Click a technology to see all vulnerabilities affecting it.
| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| npm package | matrix-js-sdk | < 38.2.0 | 38.2.0 |
References
- https://github.com/matrix-org/matrix-js-sdk/security/advisories/GHSA-mp7c-m3rh-r56v
- https://nvd.nist.gov/vuln/detail/CVE-2025-59160
- https://github.com/matrix-org/matrix-js-sdk/commit/43c72d5bf5e2d0a26b3b4f71092e7cb39d4137c4
- https://github.com/matrix-org/matrix-js-sdk
- https://github.com/matrix-org/matrix-js-sdk/releases/tag/v38.2.0
- https://www.npmjs.com/package/matrix-js-sdk/v/38.2.0
- CVSS vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N- Weakness (CWE)
CWE-20, CWE-345, CWE-862- Platform
- npm
- Package
matrix-js-sdk- Disclosed
- 16.09.2025
- Updated
- 11.10.2026 10:22
Sources and licenses
OSV / GitHub Advisory Database - GHSA-mp7c-m3rh-r56v - CC BY 4.0
Vulnerability history: matrix-js-sdk
All published vulnerabilities of this package (npm package), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 12
- First → latest
- 09.2021 09.2025
- Without a fix
- 0
- Exploited in attacks
- 0
Severity breakdown
- High 6
- Medium 6
Disclosures per year
- 2021: 1
- 2022: 4
- 2023: 3
- 2024: 3
- 2025: 1
- 2026: 0
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matrix-js-sdk has insufficient validation when considering a room to be upgraded by another this entry
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