Read the docs
TI-2025-31201 Aliases CVE-2025-49090GHSA-jhc3-vch4-27rh

The Matrix specification before 1.16 (i.e., with a room version before 12 and State…

Priority LOW 32CWE-642Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
High
Impact type
—
Confidentiality · integrity · availability
None · High · Low
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA.

Summary

The Matrix specification before 1.16 (i.e., with a room version before 12 and State Resolution before 2.1) has deficient state resolution.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00473 41st percentileScored 2026-11-07
Fix Fixed Matrix specification (Matrix): 1.16

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
matrix-orgMatrix specificationbefore 1.161.16Patch availableCNA
  • Matrix specification Vendormatrix-org Affected before 1.16 Fixed in 1.16 Patch available CNA

Remediation

  • Fix · CNA Matrix specification (Matrix) Fixed in 1.16

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    Matrix specification 1.16

    2 records Highest priority Priority LOW 2 LOW

    Other records, highest priority first

    • TI-2025-34140 The Matrix specification before 1.16 (i.e., with a room version before 12) lacks create event uniqueness.Priority LOW 31
    Show all 2 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-49090
  2. 2026-10-03 Alias added: GHSA-jhc3-vch4-27rh

References

Other 4

  • TI-2023-20035 Sydent does not verify email server certificates CVSS 3.1CRITICAL 9.3
  • TI-2026-45046 Dendrite 0.13.8 SSRF via Unauthenticated Legacy Media Download Endpoint CVSS 4.0MEDIUM 6.9
  • TI-2026-45045 Dendrite 0.13.8 Improper Authorization via POST account/3pid/delete Endpoint CVSS 4.0HIGH 7.1
  • TI-2026-45047 Dendrite 0.13.8 syncapi /context Endpoint Post-Leave State Exposure CVSS 4.0MEDIUM 5.3
  • TI-2023-15617 Synapse Outgoing federation to specific hosts can be disabled by sending malicious invites CVSS 3.1MEDIUM 5.0
  • TI-2023-20039 matrix-appservice-irc IRC command injection via admin commands containing newlines CVSS 3.1CRITICAL 9.8
See all 115 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences