CVE-2026-2376Network attack vector

Authenticated SSRF via unchecked organization mirror redirects

Published Mar 12, 2026 · Updated Mar 12, 2026

SSRF in Red Hat Quay 3 and Mirror Registry for Red Hat OpenShift allows remote authenticated users to reach restricted systems. The organization mirror API accepts an external_registry_url, creates Quay or Harbor adapters without rejecting private or reserved targets, and follows HTTP redirects. An authenticated user with organization-mirroring access can make the registry issue requests into otherwise unreachable internal networks, exposing response data or enabling actions permitted by those services.

CVSS severity4.9
Medium
EPSS probability0.16%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

SSRF in Red Hat Quay 3 and Mirror Registry for Red Hat OpenShift allows remote authenticated users to reach restricted systems. The organization mirror API accepts an external_registry_url, creates Quay or Harbor adapters without rejecting private or reserved targets, and follows HTTP redirects. An authenticated user with organization-mirroring access can make the registry issue requests into otherwise unreachable internal networks, exposing response data or enabling actions permitted by those services.

The record

CVE
CVE-2026-2376
Published
Mar 12, 2026
Updated
Mar 12, 2026
Vendor
389 Directory Server
Product
Red Hat Quay
Classifications
CWE-601, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 12, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 12, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Affected versions are unavailable in this record. Check the vendor advisory for version and patch details.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

389 Directory Server · Red Hat QuayAffected versions are unavailable in this record.
389 Directory Server · Mirror Registry for Red Hat OpenShiftAffected versions are unavailable in this record.

Published CVSS scores

4.9Red Hat, Inc.CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:N
5.4NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A: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.

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

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-601URL Redirection to Untrusted Site ('Open Redirect')
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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