CVE-2026-46484Public exploitNetwork attack vector

Authenticated Tailnet disruption via unencoded rename paths

Published Jun 8, 2026 · Updated Jun 8, 2026

Path traversal in Headplane before 0.6.3 and 0.7.0-beta.1 through 0.7.0-beta.2 allows remote authenticated users to alter Tailnet resources. The node and user rename helpers interpolate attacker-controlled names into Headscale API URL paths without encoding; URL resolution normalizes traversal segments into different endpoints. An OIDC user with machine-action access and one manageable node can rename or expire arbitrary nodes or rename users, disrupting Tailnet connectivity and identity-dependent policy behavior.

CVSS severity8.1
High
EPSS probability0.37%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Path traversal in Headplane before 0.6.3 and 0.7.0-beta.1 through 0.7.0-beta.2 allows remote authenticated users to alter Tailnet resources. The node and user rename helpers interpolate attacker-controlled names into Headscale API URL paths without encoding; URL resolution normalizes traversal segments into different endpoints. An OIDC user with machine-action access and one manageable node can rename or expire arbitrary nodes or rename users, disrupting Tailnet connectivity and identity-dependent policy behavior.

The record

CVE
CVE-2026-46484
Published
Jun 8, 2026
Updated
Jun 8, 2026
Vendor
Aarnav Tale
Product
Headplane
Classifications
CWE-285, CWE-22, T1565.001
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 8, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 8, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 0.6.3
  2. Affected versionversion=>= 0.7.0-beta.1, < 0.7.0-beta.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Aarnav Tale · Headplaneversion=< 0.6.3; version=>= 0.7.0-beta.1, < 0.7.0-beta.3

Published CVSS scores

8.1GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-285Improper Authorization
CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
T1565.001Data Manipulation: Stored Data Manipulation

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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