PT-2026-46305 · Unknown · Matrix-Sdk-Crypto
CVE-2026-45056
·
Published
2026-06-03
·
Updated
2026-09-12
CVSS v4.0
6.9
Medium
| Vector | AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N |
Name of the Vulnerable Software and Affected Versions
matrix-sdk-crypto versions prior to 0.16.1
Description
The
matrix-sdk-crypto crate fails to verify the sender's user ID during the decryption of Olm-encrypted to-device messages that include the sender device keys property. This flaw allows an attacker to spoof the sender of an encrypted to-device message, provided the attacker is the homeserver operator or is colluding with them.Recommendations
Update to version 0.16.1.
Exploit
Fix
Authentication Bypass by Spoofing
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Weakness Enumeration
Related Identifiers
Affected Products
Matrix-Sdk-Crypto