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Vulnerabilities

Vulnerability · CVE-2025-48937

matrix-rust-sdk is an implementation of a Matrix client-server library in Rust.

Published Jun 10, 2025 · catalog updated Jun 10, 2025 · matrix-rust-sdk is an implementation

Check if you run it

No confirmed exploitation is on record for CVE-2025-48937. EPSS is 0.37%. Act only if a listed version of matrix-rust-sdk is an implementation is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (matrix-rust-sdk is an implementation).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Medium4.9
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.37%
Remediation
Version ranges on file
Affected products
vendor matrix-org matrix-rust-sdk 0.8.0, < 0.11.1

matrix-rust-sdk is an implementation of a Matrix client-server library in Rust. matrix-sdk-crypto since version 0.8.0 and up to 0.11.0 does not correctly validate the sender of an encrypted event. Accordingly, a malicious homeserver operator can modify events served to clients, making those events appear to the recipient as if they were sent by another user. This vulnerability is fixed in 0.11.1 and 0.12.0.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor matrix-org matrix-rust-sdk 0.8.0, < 0.11.10.8.0, < 0.11.1

How to fix CVE-2025-48937

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2025-48937. EPSS is 0.37%. Act only if a listed version of matrix-rust-sdk is an implementation is installed.

Which versions are affected?

Compare what you have installed with matrix-org matrix-rust-sdk 0.8.0, < 0.11.1 0.8.0, < 0.11.1. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 0.37%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Jun 10, 2025 · EUVD

    Detected

    matrix-rust-sdk is an implementation of a Matrix client-server library in Rust. matrix-sdk-crypto since version 0.8.0 and up to 0.11.0 does not correctly validate the sender of an encrypted event. Accordingly, a malicious homeserver operator can modify events served to clients, making those events appear to the recipient as if they were sent by another user. This vulnerability is fixed in 0.11.1 a

  2. Jun 10, 2025 · EUVD

    Updated

    matrix-rust-sdk is an implementation of a Matrix client-server library in Rust. matrix-sdk-crypto since version 0.8.0 and up to 0.11.0 does not correctly validate the sender of an encrypted event. Accordingly, a malicious homeserver operator can modify events served to clients, making those events appear to the recipient as if they were sent by another user. This vulnerability is fixed in 0.11.1 a

Sources

  • CVE.orgVulnerability recordCVE-2025-48937

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2025-48937

    30-day exploitation probability 0.4%

    first.org
  • EUVDVulnerability recordEUVD-2025-17711

    matrix-rust-sdk is an implementation of a Matrix client-server library in Rust. matrix-sdk-crypto since version 0.8.0 and up to 0.11.0 does not correctly validate the sender of an encrypted event. Accordingly, a malicious homeserver operator can modify events served to clients, m

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.