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VulnerabilityPublished

OpenClaw: Slack allowFrom could bind to mutable display names

Affects openclawSource GCVE Database

0

CVSS 8.6 High : upgrade to 2026.5.3 soon.

Data as of 2 Jul 2026, 23:20 UTC

CVSS 4.0 base score
8.6High
How severe the flaw is on the 0–10 CVSS scale.
Patch
Available – fixed in 2026.5.3
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

What to do

Upgrade openclaw to 2026.5.3.

Affected software

ProductAffectedFixed in
npmopenclawAffected
  • <2026.5.3
Fixed in
  • 2026.5.3

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

A fix is available in OpenClaw version 2026.5.3. Until patched, operators should use stable Slack user IDs in allowlists instead of display names. Additional mitigations include keeping channel and tool allowlists narrow, avoiding sharing a Gateway between mutually untrusted users, and disabling the affected Slack allowFrom feature when it is not required.

Description

OpenClaw's Slack allowFrom feature could bind to mutable display names, allowing a Slack account that can change its display name metadata to match a policy entry incorrectly. This vulnerability affects versions prior to 2026.5.3. The issue does not alter OpenClaw's trusted-operator model but may allow agent access intended for another Slack identity if the feature is enabled and reachable. The vulnerability is rated high severity. Mitigations include using stable Slack user IDs in allowlists until patched, narrowing channel and tool allowlists, avoiding sharing a Gateway between untrusted users, and disabling the affected feature when not needed.

References

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