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CVE-2023-20882

MEDIUM
5.9
CVSS Score
Published: May 26, 2023 at 12:00 AM UTC
Updated: June 17, 2026 at 05:31 AM UTC
3 products affected across 2 vendorsCF DeploymentRouting ReleaseCloud Foundry Routing

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Severity
MEDIUM5.9
Exploit prediction
EPSS 0.6%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

CF Deployment· Cloudfoundry
95%
27.4.0 ≤ v < 29.0.0
Affected range stops below 29.0.0, so it looks safe — our inference, not a vendor statement
Routing Release· Cloudfoundry
95%
0.262.0 ≤ v < 0.266.0
Affected range stops below 0.266.0, so it looks safe — our inference, not a vendor statement
Cloud Foundry Routing· VMware
60%
0.262.0 ≤ v < 0.266.0
Affected range stops below 0.266.0, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (1)

Vendor Advisory
Source: [email protected]
https://www.cloudfoundry.org/blog/cve-2023-20882-gorouter-pruning-via-client-disconnect-resulting-in-dos/

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.9MEDIUMCISA-ADP
Attack Vector
NETWORK
Complexity
HIGH
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-400NVD-CWE-noinfo

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