What’s Vulnerable › Vulnerabilities

CVE-2025-59160: matrix-js-sdk has insufficient validation when considering a room to be upgraded by another

• Severity: low (CVSS 2.7 v4.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-09-16 · updated 2026-06-17
• Weakness: CWE-345

Description

Matrix JavaScript SDK is a Matrix Client-Server SDK for JavaScript and TypeScript. 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. The issue has been patched and users should upgrade to 38.2.0. A workaround is to avoid using MatrixClient::getJoinedRooms in favor of getRooms() and filtering upgraded rooms separately.

Affected products

• matrix-org matrix-js-sdk: before 38.2.0

References

• https://github.com/matrix-org/matrix-js-sdk/commit/43c72d5bf5e2d0a26b3b4f71092e7cb39d4137c4
• https://github.com/matrix-org/matrix-js-sdk/security/advisories/GHSA-mp7c-m3rh-r56v

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