CVE-2026-90486Network attack vectorHinoki check available

Server-side request forgery via custom-domain rewrite

Published Sep 12, 2026 · Updated Sep 12, 2026

Server-side request forgery in OpenStatus openstatus allows remote attackers to trigger requests through custom-domain status-page routing. The resolveCustomDomainRewrite helper constructs internal rewrite URLs from request-derived URL state without enforcing an allowed destination. Reachability requires hosted mode and a configured custom domain; published evidence does not establish which response data or destinations are exposed.

CVSS severityUnavailable
Unscored
EPSS probability0.23%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Server-side request forgery in OpenStatus openstatus allows remote attackers to trigger requests through custom-domain status-page routing. The resolveCustomDomainRewrite helper constructs internal rewrite URLs from request-derived URL state without enforcing an allowed destination. Reachability requires hosted mode and a configured custom domain; published evidence does not establish which response data or destinations are exposed.

The record

CVE
CVE-2026-90486
Published
Sep 12, 2026
Updated
Sep 12, 2026
Vendor
OpenStatus
Product
openstatus
Classifications
T1190
Attack vector
network
Privileges
Unavailable

Timeline

How it unfolded

  1. Sep 12, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 12, 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?

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  1. Affected versionversion=f04c827112f30a11d571ebdad3892826034d6265

What conditions does exploitation require?

Attack vectornetwork
Required privilegesUnavailable in this record.

What is affected?

OpenStatus · openstatusversion=f04c827112f30a11d571ebdad3892826034d6265

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.

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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
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1190Exploit Public-Facing Application

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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