CVE-2023-20881

What it is

Cloud foundry instances having CAPI version between 1.140 and 1.152.0 along with loggregator-agent v7+ may override other users syslog drain credentials if they're aware of the client certificate used for that syslog drain. This applies even if the drain has zero certs. This would allow the user to override the private key and add or modify a certificate authority used for the connection.

At a glance

Exploitability

Can be exploited over the network with a low-privilege account. High risk of data tampering, service disruption.

Exploit odds

0.4% chance of exploitation in the next 30 days (EPSS).

Fix

A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

1. 2023-05-19 15:15 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-06-17 05:31 UTC Last updatedMost recent change to the record

Why it ranks here

• Exploited in the wild: no, CISA does not list it.
• Exploit odds: 0.4% in the next 30 days (EPSS).
• Severity: 8.1 HIGH (CVSS).
• Fix: a patch or advisory is linked.

Details

Published

2023-05-19 15:15 UTC

Last modified

2026-06-17 05:31 UTC

Exploit probability

0.4% · EPSS, next 30 days

Weakness

CWE-295 · Improper certificate validation

Record status

Modified

Affected

• Cloudfoundry capi-release ≤ 1.152.0
• Cloudfoundry cf-deployment ≤ 29.0.0
• Cloudfoundry loggregator-agent ≤ 7.2.1

Attack profile CVSS 3.1 · 8.1

Attack vector

Network

Complexity

Low

Privileges needed

Low

User interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

High

Availability

High

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2023-20881.md and follow it. Check whether this project is affected by CVE-2023-20881. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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