CVE-2026-53823

OpenClaw < 2026.5.3 - Privilege Escalation via Mutable Slack Display Names in allowFrom

State: Published
Severity: 8.6 High
Published: Jun 12, 2026
Updated: Jun 15, 2026
Reserved: Jun 10, 2026

Description

OpenClaw before 2026.5.3 contains a privilege escalation vulnerability in the allowFrom feature that binds to mutable Slack display names. Attackers with Slack account access can change display name metadata to match policy entries, potentially gaining unauthorized agent access intended for other identities.

Scores

CVSS	Score	Vector	Source
4.0	8.6 High	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	VulnCheck
3.1	8.1 High	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N	VulnCheck

Weaknesses

CWE-290 Authentication Bypass by Spoofing

Affected Products

Product	Versions
OpenClawOpenClaw	before 2026.5.3Affected 2026.5.3Not affected

References

GitHub Security Advisory (GHSA-c29c-2q9c-pc86)vendor-advisory
VulnCheck Advisory: OpenClaw < 2026.5.3 - Privilege Escalation via Mutable Slack Display Names in allowFromthird-party-advisory

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