CVE-2025-49090
The Matrix specification before 1.16 (i.e., with a room version before 12 and State Resolution...
The Matrix specification before 1.16 (i.e., with a room version before 12 and State Resolution before 2.1) has deficient state resolution.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- High
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- High
- Availability
- Low
Exploit likelihood
What each source reports
CVE List Score used
The Matrix specification before 1.16 (i.e., with a room version before 12 and State Resolution before 2.1) has deficient state resolution.
- Record
CVE-2025-49090- CVSS 3.1
- 7.1 High
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:H/A:L - Weakness
- CWE-642
- Updated
- 2026-11-02
EUVDEUVD-2025-32573
The Matrix specification before 1.16 (i.e., with a room version before 12 and State Resolution before 2.1) has deficient state resolution.
- Record
EUVD-2025-32573- CVSS 3.1
- 7.1 High
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:H/A:L - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-jhc3-vch4-27rh
The Matrix specification before 1.16 (i.e., with a room version before 12 and State Resolution...
The Matrix specification before 1.16 (i.e., with a room version before 12 and State Resolution before 2.1) has deficient state resolution.
- Record
GHSA-jhc3-vch4-27rh- CVSS 3.1
- 7.1 High
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:H/A:L - Weakness
- CWE-642
- Updated
- 2026-11-02
NVD
The Matrix specification before 1.16 (i.e., with a room version before 12 and State Resolution before 2.1) has deficient state resolution.
- Record
CVE-2025-49090- CVSS 3.1
- 7.1 High
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:H/A:L - Weakness
- CWE-642
- Updated
- 2026-11-02
OSVALPINE-CVE-2025-49090
The Matrix specification before 1.16 (i.e., with a room version before 12 and State Resolution before 2.1) has deficient state resolution.
- Record
ALPINE-CVE-2025-49090- CVSS 3.1
- 7.1 High
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:H/A:L - Updated
- 2026-11-03
OSV
The Matrix specification before 1.16 (i.e., with a room version before 12 and State Resolution before 2.1) has deficient state resolution.
- Record
CVE-2025-49090- CVSS 3.1
- 7.1 High
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:H/A:L - Weakness
- CWE-642
- Updated
- 2026-11-02
OSVopenSUSE-SU-2025:15436-1 No score
matrix-synapse-1.136.0-1.1 on GA media
These are all security issues fixed in the matrix-synapse-1.136.0-1.1 package on the GA media of openSUSE Tumbleweed.
- Record
openSUSE-SU-2025:15436-1- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
synapseAlpine:v3.22 |
before 1.135.1-r0 | 1.135.1-r0 |
synapseAlpine:v3.23 |
before 1.135.1-r0 | 1.135.1-r0 |
synapseAlpine:v3.24 |
before 1.135.1-r0 | 1.135.1-r0 |
matrix-synapseopenSUSE:Tumbleweed |
before 1.136.0-1.1 | 1.136.0-1.1 |
History
| Recorded | Changed | Sources |
|---|---|---|
| affected, aliases, references | OSV | |
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2025-49090 is a high vulnerability (CVSS 7.1) in Matrix Specification, published August 13, 2025. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.47%, the 41st percentile. Fixed in synapse 1.135.1-r0.
References
matrix.org/blog/2025/08/security-release
github.com/Nheko-Reborn/nheko/issues/1931
nvd.nist.gov/vuln/detail/CVE-2025-49090
security.alpinelinux.org/vuln/CVE-2025-49090
suse.com/security/cve/CVE-2025-49090