CVE-2026-82040Network attack vector

Authenticated internal request forgery via unchecked metadata URL

Published Oct 2, 2026 · Updated Oct 2, 2026

Server-side request forgery in UTMStack before 11.2.16 allows remote authenticated users to reach internal hosts through metadata URLs. IdentityProviderService.validateMetadataUrl() reportedly sends requests to supplied URLs without restricting their hosts, IP addresses, or schemes. Access to the identity-providers API is required; the reported consequences are internal port probing and requests to cloud instance-metadata services.

CVSS severityUnavailable
Unscored
EPSS probability0.19%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Server-side request forgery in UTMStack before 11.2.16 allows remote authenticated users to reach internal hosts through metadata URLs. IdentityProviderService.validateMetadataUrl() reportedly sends requests to supplied URLs without restricting their hosts, IP addresses, or schemes. Access to the identity-providers API is required; the reported consequences are internal port probing and requests to cloud instance-metadata services.

The record

CVE
CVE-2026-82040
Published
Oct 2, 2026
Updated
Oct 2, 2026
Vendor
UTMStack
Product
UTMStack
Classifications
Unavailable
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 2, 2026CVE publishedPublication date reported by the CVE source.
  2. Oct 2, 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 <11.2.16

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

UTMStack · UTMStackversion=0 <11.2.16

Published CVSS scores

No CVSS assessment is available in this record.

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.

Activity data is delayed. The latest report is Sep 28, 2026.

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

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

No sourced classifications are available.

Public exploit references

No public exploit references are available in this record.

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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