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CVE-2026-53839

CVE-2026-53839 · OpenClaw < 2026.5.7 - Hostname Prefix Matching Bypass in Trusted Retry Endpoint Validation

This page contains facts from public vulnerability sources. Check the original advisory before updating.

OpenClaw before 2026.5.7 contains a hostname validation vulnerability in retry endpoint checks that allows matching hostname prefixes instead of exact hostnames. Attackers can exploit this by crafting a hostname prefix resembling a trusted host to send authentication material to untrusted endpoints.

CVSS 6.0 · Medium · EPSS 0.5% · Fix available

Published
Updated

Stack: node

Affected products and versions

  • openclaw

    Versions
    • ≥ 0, < 2026.5.7: Affected (semver)
    • 2026.5.7: Not affected (semver)

    Update to 2026.5.7

  • openclaw npm

    Affected ranges
    • SEMVER: < 2026.5.7

    Update to 2026.5.7

Original sources

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