CVE-2026-56679Public exploitNetwork attack vector

Authentication downgrade via unfiltered settings assignment

Published Jul 15, 2026 · Updated Jul 15, 2026

Mass assignment in 9Router before 0.5.4 allows remote authenticated users to disable application authentication through PATCH /api/settings. The PATCH handler passes nearly every body field to updateSettings, whose object spread overwrites stored requireLogin and related security settings. A valid session is required; disabling requireLogin exposes protected routes and stored API keys to unauthenticated remote access.

CVSS severity8.7
High
EPSS probability0.52%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Mass assignment in 9Router before 0.5.4 allows remote authenticated users to disable application authentication through PATCH /api/settings. The PATCH handler passes nearly every body field to updateSettings, whose object spread overwrites stored requireLogin and related security settings. A valid session is required; disabling requireLogin exposes protected routes and stored API keys to unauthenticated remote access.

The record

CVE
CVE-2026-56679
Published
Jul 15, 2026
Updated
Jul 15, 2026
Vendor
Decolua
Product
9Router
Classifications
CWE-915, T1562.010
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 15, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 15, 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=< 0.5.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Decolua · 9Routerversion=< 0.5.4

Published CVSS scores

8.7GitHubCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N

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.

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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-915Improperly Controlled Modification of Dynamically-Determined Object Attributes
T1562.010Downgrade Attack

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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