CVE-2026-45057

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

• ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
• AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
• Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.23% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 14.0% of scored records. A rank, not a probability.

NVD base score

4.9 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N

NVD analysis status

Deferred. NVD last modified this record on 2026-09-30.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2026-09-11 21:12Z1 MO AGO

Last updated

2026-09-14 16:18Z1 MO AGO

Reserved

2026-05-08

Assigning CNA

GitHub_M

Record state

PUBLISHED

Severity

Medium (CVSS 4.9)

CNA CVSS vector

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N

Weaknesses

• CWE-345Insufficient Verification of Data AuthenticityClass

Data version

5.2

Document digest

f78e9d7ee3994bf865a24206e83bd696a6aa2dd2810bdc86904d6100d6e5d6c4

• github.comhttps://github.com/matrix-org/matrix-rust-sdk/security/advisories/GHSA-h97m-27fx-42rxx_refsource_CONFIRM
• github.comhttps://github.com/matrix-org/matrix-rust-sdk/pull/6454x_refsource_MISC
• github.comhttps://github.com/matrix-org/matrix-rust-sdk/releases/tag/matrix-sdk-0.16.1x_refsource_MISC
• rustsec.orghttps://rustsec.org/advisories/RUSTSEC-2026-0158.htmlx_refsource_MISC