CVE-2023-33008

Name: CVE-2023-33008
Creator: NVD / NIST
Published: 2023-07-07T10:15:09.487+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.3/10EPSS 1.10%

Last modified Jun 17, 2026

CVE-2023-33008 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. Deserialization of Untrusted Data vulnerability in Apache Software Foundation Apache Johnzon. A malicious attacker can craft up some JSON input that uses large numbers (numbers such as 1e20000000) that Apache Johnzon will deserialize into BigDecimal and maybe use numbers too large which may result in a slow conversion (Denial of service risk). Apache Johnzon 1.2.21 mitigates this by setting a scale limit of 1000 (by default) to the BigDecimal. EPSS estimates a 1.10% chance of exploitation in the next 30 days.

Description

Deserialization of Untrusted Data vulnerability in Apache Software Foundation Apache Johnzon. A malicious attacker can craft up some JSON input that uses large numbers (numbers such as 1e20000000) that Apache Johnzon will deserialize into BigDecimal and maybe use numbers too large which may result in a slow conversion (Denial of service risk). Apache Johnzon 1.2.21 mitigates this by setting a scale limit of 1000 (by default) to the BigDecimal. This issue affects Apache Johnzon: through 1.2.20.

Metrics

CVSS 3.1

5.3/10

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

EPSS Probability

1.10%

61.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-502

Affected Software

Vendor	Product	Versions
Apache	Johnzon	< 1.2.21

References

https://lists.apache.org/thread/qbg14djo95gfpk7o560lr8wcrzfyw43lIssue Tracking, Mailing List, Vendor Advisory
https://lists.apache.org/thread/qbg14djo95gfpk7o560lr8wcrzfyw43lIssue Tracking, Mailing List, Vendor Advisory

Timeline

Published: Jul 7, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-33008?

How severe is CVE-2023-33008?

CVE-2023-33008 has a CVSS score of 5.3/10 (MEDIUM severity). The EPSS model estimates a 1.10% probability of exploitation in the next 30 days.

How do I fix CVE-2023-33008?

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-2023-33008?

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

Scan your code now

Source: NVD / NIST