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PatchSiren cyber security CVE debrief

CVE-2026-53823 OpenClaw CVE debrief

CVE-2026-53823 is a HIGH severity vulnerability in OpenClaw before 2026.5.3. The allowFrom feature binds to mutable Slack display names, allowing attackers with Slack account access to change display name metadata to match policy entries, potentially gaining unauthorized agent access intended for other identities. The vulnerability has a CVSS score of 8.6.

Vendor
OpenClaw
Product
Unknown
CVSS
HIGH 8.6
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-12
Original CVE updated
2026-06-16
Advisory published
2026-06-12
Advisory updated
2026-06-16

Who should care

Users of OpenClaw before version 2026.5.3 who utilize the allowFrom feature with Slack display names should be aware of this vulnerability. Attackers with Slack account access could exploit this vulnerability to gain unauthorized access.

Technical summary

The vulnerability exists in the allowFrom feature of OpenClaw, which binds to mutable Slack display names. This allows an attacker with Slack account access to change their display name metadata to match policy entries, potentially gaining unauthorized agent access intended for other identities.

Defensive priority

HIGH

Recommended defensive actions

  • Update OpenClaw to version 2026.5.3 or later.
  • Review and restrict Slack display name changes to prevent exploitation.
  • Monitor for suspicious activity related to Slack display name changes and agent access.

Evidence notes

The CVE-2026-53823 vulnerability was published on June 12, 2026, and has a CVSS score of 8.6. The vulnerability affects OpenClaw before version 2026.5.3.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-53823 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-53823

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-53823 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-53823

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.