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GHSA-v8cg-4474-49v8
No affected components available
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.
The vulnerability can be exploited over the network without needing physical access. It is easy for an attacker to exploit this vulnerability. An attacker needs basic access or low-level privileges. No user interaction is needed for the attacker to exploit this vulnerability. The impact is confined to the system where the vulnerability exists. There is a low impact on the confidentiality of the information. There is a low impact on the integrity of the data.
Exploitation attempts have been detected. Elevated vigilance and prompt remediation are advised.
The exploit probability is very low. The vulnerability is unlikely to be exploited in the next 30 days.
We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.
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