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CVE-2026-119446

9.4 critical

Critical (9.4) in nerves-hub nerves hub web.

On this page
Session Fixation vulnerability in the CLI login flow in nerves-hub nerves_hub_web allows an unauthenticated attacker to obtain an API token for another user's account via a crafted login link. Starting a CLI login with POST /api/auth/cli_session needs no authentication and returns a polling token, a confirmation URL that carries that token, and a confirmation code. When a signed-in user opens that URL and clicks Confirm, NervesHub.Accounts.verify_cli_session_token/2 creates an API token for the user's account and stores it on the login, and the next poll of GET /api/auth/cli_session/<token> returns it to whoever started the login. The confirmation code is only displayed and is never compared with anything, so it cannot show that the person confirming is the one who started the login. The confirm form carries a CSRF token and the page cannot be framed, so the attacker has to persuade the user to open the link and click the button themselves. This issue affects nerves_hub: from 2.5.0 before 2.5.3.

Severity

CVSS 4.0

9.4 critical
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
CWE
CWE-384 Session Fixation
OWASP Top 10
A07:2025 Authentication Failures
Published
Assigned by
EEF (CNA)
NVD analysis
Awaiting analysis
Record from
the NVD, synced

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Affected

Versions

From the CNA's record in the CVE List.

ProductAffected
nerves-hub nerves_hub_webfrom 2.5.0 before 2.5.3

Attack patterns (CAPEC)

  • CAPEC-21 Exploitation of Trusted Identifiers Likelihood: High · Severity: High
  • CAPEC-31 Accessing/Intercepting/Modifying HTTP Cookies Likelihood: High · Severity: High
  • CAPEC-39 Manipulating Opaque Client-based Data Tokens Likelihood: High · Severity: Medium
  • CAPEC-59 Session Credential Falsification through Prediction Likelihood: High · Severity: High
  • CAPEC-60 Reusing Session IDs (aka Session Replay) Likelihood: High · Severity: High
  • CAPEC-61 Session Fixation Likelihood: Medium · Severity: High
  • CAPEC-196 Session Credential Falsification through Forging Likelihood: Medium · Severity: Medium

The attack patterns MITRE's CAPEC relates to this record's weaknesses, as MITRE names them. Credits.

References

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