VulnerabilityAnalyzed
CVE-2026-53823
OpenClaw before 2026.5.3 contains a privilege escalation vulnerability in the allowFrom feature that binds to mutable Slack display names.
HIGH 8.6EPSS 0.21%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.21%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 4.0
- 8.6 HIGHCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M
- EPSS
- 0.21% probability · 11th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-290
- Affected
- openclaw/openclaw
- Source
- disclosure@vulncheck.com
References
- https://github.com/openclaw/openclaw/security/advisories/GHSA-c29c-2q9c-pc86Mitigation, Vendor Advisory
- https://www.vulncheck.com/advisories/openclaw-privilege-escalation-via-mutable-slack-display-names-in-allowfromThird Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.