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Advisory record · GHSA-45pr-7vv7-f64m

Sending custom to-device messages may panics

No CVSS score

Published by the GitHub Advisory Database at 29 Sept 2026, 12:00 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
matrix-sdk-cryptocrates.io>=0.0.0-0, <0.19.00.19.0
Identifiers
GHSA-45pr-7vv7-f64m · RUSTSEC-2026-0318
Published
29 Sept 2026
Updated
1 Oct 2026

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

Versions of matrix-sdk-crypto before 0.19.0 can panic when sending custom to-device messages with the IdentityBasedStrategy setting, if the recipient does not have cross-signing keys. The source does not describe what an attacker would need to trigger this or any impact beyond the panic. Upgrade to matrix-sdk-crypto 0.19.0 or later.

Written 3 Nov 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

No source has published a CVSS score for this record yet.

  • CISA KEV Not listed.
  • EPSS No score.

Timeline

  1. 31 Oct 2026, 14:24 UTC First seen by agentprime
  2. 31 Oct 2026, 14:24 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.