CVE-2026-2377: A flaw was found in Red Hat Quay and mirror registry for Red Hat OpenShift

Routine

MEDIUM 6.5WATCHLISTDOWNGRADEDOWNGRADE

CVE-2026-2377 is a medium-severity flaw (CVSS 6.5) affecting mirror registry for red hat openshift, quay. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A flaw was found in Red Hat Quay and mirror registry for Red Hat OpenShift. The log export feature in these products allows an authenticated user to specify an arbitrary callback URL. A backend process then makes server-side HTTP requests to this provided URL. This vulnerability, known as Server-Side Request Forgery (SSRF), could allow an attacker to send requests from the application's internal network, potentially leading to the disclosure of s

Why this priority

On your watchlist

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	6.5 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.4% (top 65%)
CISA exploited list	No
Weakness	CWE-918
Published	2026-04-08
Last modified	2026-09-10

Publisher (CNA): Red Hat, Inc. · Vendor: redhat

Last updated 2026-09-10 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-04-08 17:21 UTCPublished CVE record published
2026-09-10 13:18 UTCUpdated Record last modified

redhat mirror registry for red hat openshift DOWNGRADE

Affected: all versions · 2.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.0

1. Check installed version

apt-cache policy mirror-registry-for-red-hat-openshift || rpm -q mirror-registry-for-red-hat-openshift || mirror-registry-for-red-hat-openshift --version

2. No fixed release: DOWNGRADE to a release before 2.0 (Debian / Ubuntu)

apt-cache madison mirror-registry-for-red-hat-openshift sudo apt install mirror-registry-for-red-hat-openshift=<VERSION_BEFORE_2.0> sudo apt-mark hold mirror-registry-for-red-hat-openshift

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list mirror-registry-for-red-hat-openshift sudo dnf downgrade mirror-registry-for-red-hat-openshift-<VERSION_BEFORE_2.0> sudo dnf versionlock add mirror-registry-for-red-hat-openshift

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

redhat quay DOWNGRADE

Affected: 3.0.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 3.0.0

1. Check installed version

apt-cache policy quay || rpm -q quay || quay --version

2. No fixed release: DOWNGRADE to a release before 3.0.0 (Debian / Ubuntu)

apt-cache madison quay sudo apt install quay=<VERSION_BEFORE_3.0.0> sudo apt-mark hold quay

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list quay sudo dnf downgrade quay-<VERSION_BEFORE_3.0.0> sudo dnf versionlock add quay

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-2377?

mirror registry for red hat openshift: downgrade or apply the listed mitigation; quay: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2026-2377 being exploited?

CVE-2026-2377 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-2377 affect?

CVE-2026-2377 affects mirror registry for red hat openshift, quay. Severity is medium (CVSS 6.5). A flaw was found in Red Hat Quay and mirror registry for Red Hat OpenShift. The log export feature in these products allows an authenticated user to specify an arbitrary callback URL. A backend process then makes server-side HTTP requests t

How urgent is CVE-2026-2377?

Priority 36/100. On your watchlist

Software pages

Red Hat OpenShift vulnerabilities

Related CVEs

CVE-2026-32591 MEDIUM 5.2 DOWNGRADE DOWNGRADE A flaw was found in Red Hat Quay's Proxy Cache configuration feature
CVE-2026-32589 HIGH 7.4 DOWNGRADE DOWNGRADE A flaw was found in Red Hat Quay's container image upload process
CVE-2026-32590 HIGH 7.1 DOWNGRADE DOWNGRADE A flaw was found in Red Hat Quay's handling of resumable container image layer uploads
CVE-2025-14243 MEDIUM 5.3 DOWNGRADE A flaw was found in the OpenShift Mirror Registry

References

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