CVE-2020-5401: Cloud Foundry Routing Release, versions prior to 0.197.0, contains GoRouter, which allows malicious clients to

Q: How do I fix CVE-2020-5401?

routing release: upgrade to 0.197.0. Exact commands for each OS are on this page.

Q: Is CVE-2020-5401 being exploited?

CVE-2020-5401 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-2020-5401 affect?

CVE-2020-5401 affects routing release. Severity is medium (CVSS 5.3). Cloud Foundry Routing Release, versions prior to 0.197.0, contains GoRouter, which allows malicious clients to send invalid headers, causing caching layers to reject subsequent legitimate clients trying to access the app.

Q: How urgent is CVE-2020-5401?

Priority 40/100. Remotely exploitable, no login, no user action

This month

MEDIUM 5.3REMOTEUPGRADE

CVE-2020-5401 is a medium-severity flaw (CVSS 5.3) affecting routing release. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Cloud Foundry Routing Release, versions prior to 0.197.0, contains GoRouter, which allows malicious clients to send invalid headers, causing caching layers to reject subsequent legitimate clients trying to access the app.

Why this priority

Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	5.3 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.0% (top 36%)
CISA exploited list	No
Weakness	CWE-393, CWE-444
Published	2020-02-27
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

2020-02-27 20:15 UTCPublished CVE record published
2026-06-17 03:21 UTCUpdated Record last modified

cloudfoundry routing release UPGRADE

Affected: < 0.197.0

Fixed in: 0.197.0

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 0.197.0 (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-2020-5401?

routing release: upgrade to 0.197.0. Exact commands for each OS are on this page.

Is CVE-2020-5401 being exploited?

CVE-2020-5401 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-2020-5401 affect?

CVE-2020-5401 affects routing release. Severity is medium (CVSS 5.3). Cloud Foundry Routing Release, versions prior to 0.197.0, contains GoRouter, which allows malicious clients to send invalid headers, causing caching layers to reject subsequent legitimate clients trying to access the app.

How urgent is CVE-2020-5401?

Priority 40/100. Remotely exploitable, no login, no user action

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CVE-2024-22279 MEDIUM 5.9 UPGRADE UPGRADE Improper handling of requests in Routing Release > v0.273.0 and <= v0.297.0 allows an unauthenticated attacker
CVE-2023-20882 MEDIUM 5.9 UPGRADE UPGRADE In Cloud foundry routing release versions from 0.262.0 and prior to 0.266.0,a bug in the gorouter process can

References

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