GHSA-v8cg-4474-49v8

Suggest an improvement
Source
https://github.com/advisories/GHSA-v8cg-4474-49v8
Import Source
https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/03/GHSA-v8cg-4474-49v8/GHSA-v8cg-4474-49v8.json
JSON Data
https://api.osv.dev/v1/vulns/GHSA-v8cg-4474-49v8
Aliases
Downstream
Published
2026-03-12T14:21:59Z
Modified
2026-03-30T13:50:45.863348Z
Severity
  • 5.4 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N CVSS Calculator
  • 5.3 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N CVSS Calculator
Summary
OpenClaw: Slack system events bypass sender authorization in member and message subtype handlers
Details

Summary

Slack member_* and message subtype system events (message_changed, message_deleted, thread_broadcast) were not consistently enforcing sender authorization before enqueueing system events.

Affected Packages / Versions

  • Package: openclaw (npm)
  • Latest published version: 2026.2.25
  • Affected range: <= 2026.2.25
  • Planned patched version: 2026.2.26 (pre-set for publish-readiness)

Technical Details

Slack system-event handlers in src/slack/monitor/events/members.ts and src/slack/monitor/events/messages.ts enqueued events after channel checks without shared sender authorization. Deployments relying on Slack DM allowlists (dmPolicy / allowFrom) or per-channel users allowlists could receive unauthorized system-event ingress from non-allowlisted senders.

The fix routes those handlers through authorizeAndResolveSlackSystemEventContext(...) and fails closed when message subtype sender identity cannot be resolved.

Fix Commit(s)

  • 3d30ba18a2aba1e1b302e77ff33145c3b06c01c8

Release Process Note

patched_versions is pre-set to >= 2026.2.26 so once npm 2026.2.26 is published, this advisory can be published without further field edits.

Thanks @tdjackey for reporting.

Database specific 
{
    "github_reviewed": true,
    "github_reviewed_at": "2026-03-12T14:21:59Z",
    "cwe_ids": [
        "CWE-863"
    ],
    "severity": "MODERATE",
    "nvd_published_at": null
}
References

Affected packages

npm / openclaw

Package

Name
openclaw
View open source insights on deps.dev
Purl
pkg:npm/openclaw

Affected ranges

Type
SEMVER
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2026.2.26

Database specific

source 
"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/03/GHSA-v8cg-4474-49v8/GHSA-v8cg-4474-49v8.json"
last_known_affected_version_range 
"<= 2026.2.25"