How severe is CVE-2023-20882?

CVE-2023-20882 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2023-20882 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (44th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-20882?

CVE-2023-20882 primarily affects Cloudfoundry Cf-deployment. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2023-20882?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2023-20882 published?

CVE-2023-20882 was published on 2023-05-26 and last updated on 2026-06-17.

CVE-2023-20882

CVE-2023-20882 is a medium-severity vulnerability in Cloudfoundry Cf-deployment with a CVSS 3.x base score of 5.9. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-400.

Key facts

Severity: Medium (CVSS 3.x base score 5.9)
EPSS exploit prediction: 1% (44th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-400
Affected product: Cloudfoundry Cf-deployment
Published: 2023-05-26
Last modified: 2026-06-17

Description

In Cloud foundry routing release versions from 0.262.0 and prior to 0.266.0,a bug in the gorouter process can lead to a denial of service of applications hosted on Cloud Foundry. Under the right circumstances, when client connections are closed prematurely, gorouter marks the currently selected backend as failed and removes it from the routing pool.

Frequently asked questions

What is CVE-2023-20882?: In Cloud foundry routing release versions from 0.262.0 and prior to 0.266.0,a bug in the gorouter process can lead to a denial of service of applications hosted on Cloud Foundry. Under the right circumstances, when client connections are closed prematurely, gorouter marks the currently selected backend as failed and removes it from the routing pool.
How severe is CVE-2023-20882?: CVE-2023-20882 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2023-20882 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (44th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-20882?: CVE-2023-20882 primarily affects Cloudfoundry Cf-deployment. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2023-20882?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2023-20882 published?: CVE-2023-20882 was published on 2023-05-26 and last updated on 2026-06-17.

References

https://www.cloudfoundry.org/blog/cve-2023-20882-gorouter-pruning-via-client-disconnect-resulting-in-dos/

Affected products (2)

cpe:2.3:a:cloudfoundry:cf-deployment:*:*:*:*:*:*:*:*
cpe:2.3:a:cloudfoundry:routing_release:*:*:*:*:*:*:*:*

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