CVE-2026-22726: Route Services can be leveraged to send app traffic to network destinations outside of an app's configured egr

Routine

MEDIUM 5.0UPGRADEUPGRADE

CVE-2026-22726 is a medium-severity flaw (CVSS 5.0) affecting cf-deployment, routing release. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Route Services can be leveraged to send app traffic to network destinations outside of an app's configured egress rules. As a result, a malicious developer with access to Cloudfoundry could configure a route-service that would allow it to send requests to HTTP services on internal networks reachable by the Gorouter, which may not have previously had direct access from outside networks, or from the application. Routing release: affected from v0.11

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	5.0 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.2% (top 90%)
CISA exploited list	No
Weakness	CWE-923
Published	2026-05-01
Last modified	2026-10-26

Publisher (CNA): VMware · Vendor: cloudfoundry

Last updated 2026-10-26 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-05-01 00:16 UTCPublished CVE record published
2026-10-26 22:10 UTCUpdated Record last modified

cloudfoundry cf-deployment UPGRADE

Affected: >= 0.0.2 and < 55.0.0

Fixed in: 55.0.0

Safe to downgrade to: a release before 0.0.2

1. Check installed version

apt-cache policy cf-deployment || rpm -q cf-deployment || cf-deployment --version

2. UPGRADE to 55.0.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade cf-deployment

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade cf-deployment

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

3. If no update is available yet, DOWNGRADE to a release before 0.0.2 (Debian / Ubuntu)

apt-cache madison cf-deployment sudo apt install cf-deployment=<VERSION_BEFORE_0.0.2> sudo apt-mark hold cf-deployment

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list cf-deployment sudo dnf downgrade cf-deployment-<VERSION_BEFORE_0.0.2> sudo dnf versionlock add cf-deployment

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.

cloudfoundry routing release UPGRADE

Affected: >= 0.118.0 and < 0.372.0

Fixed in: 0.372.0

Safe to downgrade to: a release before 0.118.0

1. Check installed version

apt-cache policy routing-release || rpm -q routing-release || routing-release --version

2. UPGRADE to 0.372.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade routing-release

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade routing-release

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

3. If no update is available yet, DOWNGRADE to a release before 0.118.0 (Debian / Ubuntu)

apt-cache madison routing-release sudo apt install routing-release=<VERSION_BEFORE_0.118.0> sudo apt-mark hold routing-release

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list routing-release sudo dnf downgrade routing-release-<VERSION_BEFORE_0.118.0> sudo dnf versionlock add routing-release

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-2026-22726?

cf-deployment: upgrade to 55.0.0; routing release: upgrade to 0.372.0. Exact commands for each OS are on this page.

Is CVE-2026-22726 being exploited?

CVE-2026-22726 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-2026-22726 affect?

CVE-2026-22726 affects cf-deployment, routing release. Severity is medium (CVSS 5.0). Route Services can be leveraged to send app traffic to network destinations outside of an app's configured egress rules. As a result, a malicious developer with access to Cloudfoundry could configure a route-service that would allow it to s

How urgent is CVE-2026-22726?

Priority 20/100. No elevated risk signals yet.

References

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