CVE-2020-5416: Cloud Foundry Routing (Gorouter), versions prior to 0.204.0, when used in a deployment with NGINX reverse prox

Q: How do I fix CVE-2020-5416?

cf-deployment: upgrade to 13.13.0; routing-release: upgrade to 0.204.0. Exact commands for each OS are on this page.

Q: Is CVE-2020-5416 being exploited?

CVE-2020-5416 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2020-5416 affect?

CVE-2020-5416 affects cf-deployment, routing-release. Severity is medium (CVSS 6.5). Cloud Foundry Routing (Gorouter), versions prior to 0.204.0, when used in a deployment with NGINX reverse proxies in front of the Gorouters, is potentially vulnerable to denial-of-service attacks in which an unauthenticated malicious attack

Q: How urgent is CVE-2020-5416?

Priority 45/100. On your watchlist

This month

MEDIUM 6.5WATCHLISTUPGRADEUPGRADE

CVE-2020-5416 is a medium-severity flaw (CVSS 6.5) affecting cf-deployment, routing-release. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Cloud Foundry Routing (Gorouter), versions prior to 0.204.0, when used in a deployment with NGINX reverse proxies in front of the Gorouters, is potentially vulnerable to denial-of-service attacks in which an unauthenticated malicious attacker can send specially-crafted HTTP requests that may cause the Gorouters to be dropped from the NGINX backend pool.

Why this priority

On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	6.5 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	1.2% (top 31%)
CISA exploited list	No
Weakness	CWE-404
Published	2020-08-21
Last modified	2026-06-17

Publisher (CNA): Pivotal Software, Inc. · Vendor: cloudfoundry

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2020-08-21 22:15 UTCPublished CVE record published
2026-06-17 03:21 UTCUpdated Record last modified

cloudfoundry cf-deployment UPGRADE

Affected: < 13.13.0

Fixed in: 13.13.0

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to 13.13.0 (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.

cloudfoundry routing-release UPGRADE

Affected: < 0.204.0

Fixed in: 0.204.0

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to 0.204.0 (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.

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-2020-5416?

cf-deployment: upgrade to 13.13.0; routing-release: upgrade to 0.204.0. Exact commands for each OS are on this page.

Is CVE-2020-5416 being exploited?

CVE-2020-5416 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-2020-5416 affect?

CVE-2020-5416 affects cf-deployment, routing-release. Severity is medium (CVSS 6.5). Cloud Foundry Routing (Gorouter), versions prior to 0.204.0, when used in a deployment with NGINX reverse proxies in front of the Gorouters, is potentially vulnerable to denial-of-service attacks in which an unauthenticated malicious attack

How urgent is CVE-2020-5416?

Priority 45/100. On your watchlist

Software pages

nginx vulnerabilities

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References

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