PatchSiren

PatchSiren cyber security CVE debrief

CVE-2026-53827 OpenClaw CVE debrief

CVE-2026-53827 is a credential exposure vulnerability in OpenClaw before version 2026.5.2. The vulnerability occurs in the message.action forwarding feature, which allows model-controlled metadata to forward action payloads with Gateway credentials to attacker-supplied loopback URLs. This enables remote attackers to intercept Gateway tokens and action payloads by providing malicious loopback targets through model-controlled action metadata. The CVSS score for this vulnerability is 6, indicating a medium severity.

Vendor
OpenClaw
Product
Unknown
CVSS
MEDIUM 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 2026.5.2 should be aware of this vulnerability and take steps to mitigate it.

Technical summary

The vulnerability is caused by the message.action forwarding feature in OpenClaw, which allows model-controlled metadata to forward action payloads with Gateway credentials to attacker-supplied loopback URLs. This can be exploited by remote attackers to intercept Gateway tokens and action payloads.

Defensive priority

MEDIUM

Recommended defensive actions

  • Upgrade to OpenClaw version 2026.5.2 or later.
  • Restrict access to the message.action forwarding feature.
  • Monitor for suspicious activity related to Gateway tokens and action payloads.

Evidence notes

The CVE record was obtained from the official CVE website [cve-org]. Additional information was obtained from the NVD [nvd] and source references [ref-4], [ref-5].

Sources and references

Verified primary and authoritative sources

  • CVE-2026-53827 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-53827

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

  • CVE-2026-53827 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-53827

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

Supplemental references

  • Source reference

    Unverified legacy reference

    URL: https://github.com/openclaw/openclaw/security/advisories/GHSA-grc3-2j34-p6gm

    [email protected]

  • Source reference

    Unverified legacy reference

    URL: https://www.vulncheck.com/advisories/openclaw-credential-exposure-via-model-supplied-loopback-urls-in-message-action-forwarding

    [email protected]

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.