CVE-2020-5423

Cloud Controller is vulnerable to denial of service via YAML parsing

Description

CAPI (Cloud Controller) versions prior to 1.101.0 are vulnerable to a denial-of-service attack in which an unauthenticated malicious attacker can send specially-crafted YAML files to certain endpoints, causing the YAML parser to consume excessive CPU and RAM.

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
CVSS 3.0 •
CVSS 2.0 •
EPSS 0.42%
Vendor Advisory cloudfoundry.org
Affected: Cloud Foundry CAPI
Affected: Cloud Foundry CF Deployment
Published at:
Updated at:

References

Link Tags
https://www.cloudfoundry.org/blog/cve-2020-5423 vendor advisory

Frequently Asked Questions

What is the severity of CVE-2020-5423?
CVE-2020-5423 has been scored as a high severity vulnerability.
How to fix CVE-2020-5423?
To fix CVE-2020-5423, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2020-5423 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2020-5423 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2020-5423?
CVE-2020-5423 affects Cloud Foundry CAPI, Cloud Foundry CF Deployment.
This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.
© 2025 Under My Watch. All Rights Reserved.