CVE-2024-52813Network attack vector

Message trust bypass via omitted identity-change signal

Published Jan 7, 2025 · Updated Jan 7, 2025

Cryptographic trust failure in matrix-sdk-crypto before 0.8.0 allows remote authenticated users to conceal identity changes from clients. EncryptionInfo lacked a distinct state for messages from a formerly verified identity, so consuming clients received no dedicated verification-violation signal. The attacker must hold a Matrix account and rotate its cryptographic identity; affected clients can overlook the change and present later messages without a warning reserved for previously verified senders.

CVSS severity4.3
Medium
EPSS probability0.48%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cryptographic trust failure in matrix-sdk-crypto before 0.8.0 allows remote authenticated users to conceal identity changes from clients. EncryptionInfo lacked a distinct state for messages from a formerly verified identity, so consuming clients received no dedicated verification-violation signal. The attacker must hold a Matrix account and rotate its cryptographic identity; affected clients can overlook the change and present later messages without a warning reserved for previously verified senders.

The record

CVE
CVE-2024-52813
Published
Jan 7, 2025
Updated
Jan 7, 2025
Vendor
The Matrix.org Foundation
Product
matrix-rust-sdk
Classifications
CWE-223
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 7, 2025CVE publishedPublication date reported by the CVE source.
  2. Jan 7, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 0.8.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

The Matrix.org Foundation · matrix-rust-sdkversion=< 0.8.0

Published CVSS scores

4.3GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-223Omission of Security-relevant Information

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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