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Medium, CVSS 4.3

matrix-sdk-crypto missing facility to signal rotation of a verified cryptographic identity

CVE-2024-52813GHSA-r5vf-wf4h-82gg

What to do

Vendor fix available. Upgrade each affected package to the fixed version on its release line (matrix-sdk-crypto 0.8.0), redeploy, then verify what is actually installed.

This page has no inventory attached, so it cannot say whether you are affected. A vendor fix is not proof that your deployment is fixed.

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Affected packages

Sources

Severity and exploitation
Exploitation
No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.
CVSS
4.3 · CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
EPSS
  • CVE-2024-52813: 0.49% estimated exploitation activity in the next 30 days; percentile 42.19 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.
Source description

As published by the source; long descriptions are shortened.

Impact Versions of the matrix-sdk-crypto Rust crate before 0.8.0 lack a dedicated mechanism to notify that a user's cryptographic identity has changed from a verified to an unverified one, which could cause client applications relying on the SDK to overlook such changes. Patches matrix-sdk-crypto 0.8.0 adds a new VerificationLevel::VerificationViolation enum variant which indicates that a previously verified identity has been changed. References - Patch: https://github.com/matrix-org/matrix-rust-sdk/pull/3795

Dates and revisions
Published by the source
Last modified by the source
Source last checked
  1. Revision 1 · created ·

    Published from ghsa record GHSA-r5vf-wf4h-82gg

Agent brief

Preview the exact text before you copy it. Commands are read-only suggestions; review them before running anything.

# Patch Next advisory brief: CVE-2024-52813

Advisory: matrix-sdk-crypto missing facility to signal rotation of a verified cryptographic identity
IDs: CVE-2024-52813, GHSA-r5vf-wf4h-82gg
Record: https://patchnext.com/advisories/cve-2024-52813 (revision 1, source checked 26 Oct 2026, 15:38 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: Medium (CVSS 4.3)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: matrix-sdk-crypto 0.8.0. A vendor fix does not mean a deployment is fixed.

## Affected components
- crates.io matrix-sdk-crypto: affected < 0.8.0; fixed in 0.8.0

## Suggested inspection (read-only)
- crates.io matrix-sdk-crypto: check the installed version with your package manager.

## Supported action
Upgrade each affected component to a fixed version on its release line. For a transitive dependency, upgrade the parent package or add an override or constraint, then regenerate the lockfile. Redeploy every environment that ran an affected version.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on matrix-sdk-crypto.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://github.com/advisories/GHSA-r5vf-wf4h-82gg (GitHub-reviewed advisory GHSA-r5vf-wf4h-82gg lists affected ranges: crates.io matrix-sdk-crypto >=0 <0.8.0)

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