How severe is CVE-2026-26327?

No CVSS score has been assigned to CVE-2026-26327 yet. Review the advisory details and affected package list to assess your exposure.

Which packages are affected by CVE-2026-26327?

CVE-2026-26327 affects the following packages: openclaw (npm). Ecosystems affected: npm.

How do I fix CVE-2026-26327?

Update openclaw to 2026.2.14 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2026-26327 is resolved across your whole dependency graph.

How do I detect CVE-2026-26327 in my npm dependencies?

Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for openclaw, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

How do I mitigate CVE-2026-26327 if there is no patch (or I can't update yet)?

If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

How does O3 Security protect against CVE-2026-26327?

O3 Security's impact-aware SCA analyses which vulnerable code paths your application actually calls, so a match like CVE-2026-26327 can be triaged on real exposure rather than presence alone.

Is CVE-2026-26327 actively exploited in the wild?

No public exploit code has been indexed for CVE-2026-26327 yet. This does not mean the vulnerability cannot be exploited — absence of public exploits does not imply safety. Apply the recommended fix and use O3 Security to monitor your exposure.

What is the EPSS score for CVE-2026-26327?

CVE-2026-26327 has an EPSS (Exploit Prediction Scoring System) score of 0.1%, placing it in the 1th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. This score indicates relatively lower exploitation probability, though the CVSS severity should still guide your patching priority.

What type of vulnerability is CVE-2026-26327?

CVE-2026-26327 is classified as CWE-345 (CWE-345). This weakness type describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation.

When was CVE-2026-26327 published, and has it been updated?

CVE-2026-26327 was published on February 19, 2026 and was last updated on August 12, 2026. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

📦 npm

Not in CISA KEV

CVE-2026-26327 — openclaw

Fix: openclaw/openclaw@d583782

CVE-2026-26327 is a CWE-345 vulnerability in openclaw. A fix is available for openclaw — see the affected versions and patch details below.

OpenClaw allows unauthenticated discovery TXT records to steer routing and TLS pinning

Also known asGHSA-pv58-549p-qh99

Published

Feb 19, 2026

Updated

Aug 12, 2026

Affected

1 pkg

Patched

1 / 1

Exploits

None indexed

Exploitation data as of Sep 23, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

Exploitation Status

No confirmed exploitation observed yet

CISA’s own triage has not observed active exploitation or public proof-of-concept code for this CVE as of its last assessment.

Exploitation and automatability from CISA’s SSVC triage for CVE-2026-26327.

EPSS Exploitation Probability

via FIRST.org ↗

0.1%probability of exploitation in next 30 days

Lower Risk0.00%

Lower risk than most CVEs1th percentile — riskier than 1% of all scored CVEsHighest risk

EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.

Real-World Exposure

1 pkg affected

How broadly this vulnerability is actually deployed: weekly install volume shows current usage, and reverse-dependency count shows how many other packages break if it stays unpatched.

133other npm packages depend on this — each one inherits the vulnerability until it's patched upstream

openclawnpm

2.5Mdownloads / week

Description

Summary

Discovery beacons (Bonjour/mDNS and DNS-SD) include TXT records such as lanHost, tailnetDns, gatewayPort, and gatewayTlsSha256. TXT records are unauthenticated.

Prior to the fix, 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.

Distribution / Exposure

The iOS and Android apps are currently 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.

CVSS can still be used for the technical (base) severity of the bug; limited distribution primarily affects environmental risk.

Affected Packages / Versions

Package: openclaw (npm)
Affected: <= 2026.2.13 (latest published on npm as of 2026-02-14)
Patched: planned for >= 2026.2.14 (not yet published at time of writing)

Fix

Clients now prefer the resolved service endpoint (SRV + A/AAAA) over TXT-provided routing hints.
Discovery-provided fingerprints no longer override stored TLS pins.
iOS/Android: first-time TLS pins require explicit user confirmation (fingerprint shown; no silent TOFU).
iOS/Android: discovery-based direct connects are TLS-only.
Android: hostname verification is no longer globally disabled (only bypassed when pinning).

Fix Commit(s)

d583782ee322a6faa1fe87ae52455e0d349de586

Credits

Thanks @simecek for reporting.

Affected Packages

1 total 1 fixed

Ecosystem	Package	Vulnerable range	Fix
📦npm	`openclaw`	all versions	2026.2.14`npm install openclaw@2026.2.14`

Detection & mitigation playbook

Open-source dependency

Detect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for openclaw, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update openclaw to 2026.2.14 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2026-26327 is resolved across your whole dependency graph.
Workarounds
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.
How O3 protects you
O3 Security's impact-aware SCA analyses which vulnerable code paths your application actually calls, so a match like CVE-2026-26327 can be triaged on real exposure rather than presence alone.

Tailored to CVE-2026-26327. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.

Frequently Asked Questions

## Summary Discovery beacons (Bonjour/mDNS and DNS-SD) include TXT records such as `lanHost`, `tailnetDns`, `gatewayPort`, and `gatewayTlsSha256`. TXT records are unauthenticated. Prior to the fix, 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 `_opencl

O3 Security · Impact-Aware SCA

Is CVE-2026-26327 in your dependencies?

O3 Security finds CVE-2026-26327 across npm dependencies, including transitive ones, and its impact-aware SCA ranks findings by whether your code actually calls the vulnerable path.

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