GHSA-jj6p-3m75-g2p3

Source

https://github.com/advisories/GHSA-jj6p-3m75-g2p3

Import Source

https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2025/12/GHSA-jj6p-3m75-g2p3/GHSA-jj6p-3m75-g2p3.json

JSON Data

https://api.osv.dev/v1/vulns/GHSA-jj6p-3m75-g2p3

Aliases

Published

2025-12-08T22:07:47Z

Modified

2025-12-09T19:36:28.271982Z

Severity

1.3 (Low) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U CVSS Calculator

Summary

matrix-sdk-base denial of service via custom m.room.join_rules event values

Details

The matrix-sdk-base crate is unable to handle responses that include custom m.room.join_rules values due to a serialization bug.

This can be exploited to cause a denial-of-service condition, if a user is invited to a room with non-standard join rules, the crate's sync process will stall, preventing further processing for all rooms.

Patches

The issue is fixed in matrix-sdk-base 0.16.0.

Workarounds

Users can leave affected rooms on another client to mitigate the issue.

References

The issue was fixed in https://github.com/matrix-org/matrix-rust-sdk/pull/5924.

Database specific

{
    "github_reviewed_at": "2025-12-08T22:07:47Z",
    "cwe_ids": [
        "CWE-755"
    ],
    "severity": "LOW",
    "nvd_published_at": "2025-12-09T16:18:21Z",
    "github_reviewed": true
}

References

Affected packages

crates.io / matrix-sdk-base

Package

Name: matrix-sdk-base; View open source insights on deps.dev
Purl: pkg:cargo/matrix-sdk-base

Affected ranges

Type: SEMVER
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

0.16.0