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TLS CVE-2026-26327

MEDIUM
Insufficient Verification of Data Authenticity (CWE-345)
2026-02-19 security-advisories@github.com GHSA-pv58-549p-qh99
6.5
CVSS 3.1
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CVSS VectorNVD

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack Vector
Adjacent
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

Lifecycle Timeline

3
Analysis Generated
Mar 12, 2026 - 22:03 vuln.today
Patch released
Feb 23, 2026 - 13:44 nvd
Patch available
CVE Published
Feb 19, 2026 - 23:16 nvd
MEDIUM 6.5

DescriptionNVD

OpenClaw is a personal AI assistant. Discovery beacons (Bonjour/mDNS and DNS-SD) include TXT records such as lanHost, tailnetDns, gatewayPort, and gatewayTlsSha256. TXT records are unauthenticated. Prior to version 2026.2.14, some clients treated TXT values as authoritative routing/pinning inputs. iOS and macOS used TXT-provided host hints (lanHost/tailnetDns) and ports (gatewayPort) to build the connection URL. iOS and Android allowed the discovery-provided TLS fingerprint (gatewayTlsSha256) to override a previously stored TLS pin. On a shared/untrusted LAN, an attacker could advertise a rogue _openclaw-gw._tcp service. This could cause a client to connect to an attacker-controlled endpoint and/or accept an attacker certificate, potentially exfiltrating Gateway credentials (auth.token / auth.password) during connection. As of time of publication, the iOS and Android apps are alpha/not broadly shipped (no public App Store / Play Store release). Practical impact is primarily limited to developers/testers running those builds, plus any other shipped clients relying on discovery on a shared/untrusted LAN. Version 2026.2.14 fixes the issue. Clients now prefer the resolved service endpoint (SRV + A/AAAA) over TXT-provided routing hints. Discovery-provided fingerprints no longer override stored TLS pins. In iOS/Android, first-time TLS pins require explicit user confirmation (fingerprint shown; no silent TOFU) and discovery-based direct connects are TLS-only. In Android, hostname verification is no longer globally disabled (only bypassed when pinning).

AnalysisAI

OpenClaw's mDNS/Bonjour discovery beacons transmit unauthenticated TXT records that iOS, macOS, and Android clients treat as authoritative for routing and TLS certificate pinning, allowing an attacker on a shared LAN to advertise a rogue service and redirect connections to attacker-controlled endpoints. An attacker can exploit this to bypass TLS pinning validation and potentially capture Gateway credentials through man-in-the-middle attacks. …

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RemediationAI

Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Vendor patch is available.

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CVE-2026-26327 vulnerability details – vuln.today

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