CVE-2023-24621

Name: CVE-2023-24621
Creator: NVD / NIST
Published: 2023-08-25T20:15:07.983+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.8/10EPSS 0.44%

Last modified Jun 17, 2026

CVE-2023-24621 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. An issue was discovered in Esoteric YamlBeans through 1.15. It allows untrusted deserialisation to Java classes by default, where the data and class are controlled by the author of the YAML document being processed.. EPSS estimates a 0.44% chance of exploitation in the next 30 days.

Description

An issue was discovered in Esoteric YamlBeans through 1.15. It allows untrusted deserialisation to Java classes by default, where the data and class are controlled by the author of the YAML document being processed.

Metrics

CVSS 3.1

7.8/10

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS Probability

0.44%

35.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-502

Affected Software

Vendor	Product	Versions
Esotericsoftware	Yamlbeans	<= 1.15

References

https://contrastsecurity.comThird Party Advisory
https://github.com/Contrast-Security-OSS/yamlbeans/blob/main/SECURITY.mdExploit, Third Party Advisory
https://github.com/EsotericSoftwareThird Party Advisory
https://contrastsecurity.comThird Party Advisory
https://github.com/Contrast-Security-OSS/yamlbeans/blob/main/SECURITY.mdExploit, Third Party Advisory
https://github.com/EsotericSoftwareThird Party Advisory

Timeline

Published: Aug 25, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-24621?

How severe is CVE-2023-24621?

CVE-2023-24621 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.44% probability of exploitation in the next 30 days.

How do I fix CVE-2023-24621?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-24621?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST