CVE-2023-33008
Apache Johnzon: Prevent inefficient internal conversion from BigDecimal at large 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.
This issue affects Apache Johnzon: through 1.2.20.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- None
- Availability
- Low
Exploit likelihood
What each source reports
NVD Score used
5.3
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.
- Record
CVE-2023-33008- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L - Weakness
- CWE-502
- Updated
- 2026-11-02
CVE List
5.3
Apache Johnzon: Prevent inefficient internal conversion from BigDecimal at large 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.
This issue affects Apache Johnzon: through 1.2.20.
- Record
CVE-2023-33008- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L - Weakness
- CWE-502
- Updated
- 2026-11-02
EUVDEUVD-2023-2038
5.3
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.
- Record
EUVD-2023-2038- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-crqg-jrpj-fc84
5.3
Apache Johnzon Deserialization of Untrusted Data vulnerability
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.
- Record
GHSA-crqg-jrpj-fc84- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L - Weakness
- CWE-502
- Updated
- 2026-11-02
OSV
5.3
Apache Johnzon: Prevent inefficient internal conversion from BigDecimal at large 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.
This issue affects Apache Johnzon: through 1.2.20.
- Record
CVE-2023-33008- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L - Weakness
- CWE-502
- Updated
- 2026-11-02
OSVGHSA-crqg-jrpj-fc84
5.3
Apache Johnzon Deserialization of Untrusted Data vulnerability
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.
- Record
GHSA-crqg-jrpj-fc84- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L - Weakness
- CWE-502
- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
org.apache.johnzon:johnzon-mapperMaven |
before 1.2.21 | 1.2.21 |
org.apache.johnzon:johnzon-mapperMaven |
before 1.2.21, plus listed versions 0.1-incubating0.2-incubating0.5-incubating0.6-incubating0.7-incubating Show 45 moreShow less0.8-incubating0.9-incubating0.9.1-incubating0.9.2-incubating0.9.3-incubating0.9.40.9.51.0.01.0.11.0.21.1.01.1.11.1.101.1.111.1.121.1.131.1.21.1.31.1.41.1.51.1.61.1.71.1.81.1.91.2.01.2.11.2.101.2.111.2.121.2.131.2.141.2.151.2.161.2.171.2.181.2.191.2.21.2.201.2.31.2.41.2.51.2.61.2.71.2.81.2.9 |
1.2.21 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases, published | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2023-33008 is a medium vulnerability (CVSS 5.3) in Apache Johnzon, published July 7, 2023. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.44%, the 73rd percentile. Fixed in org.apache.johnzon:johnzon-mapper 1.2.21.
References
lists.apache.org/thread/qbg14djo95gfpk7o560lr8wcrzfyw43l
nvd.nist.gov/vuln/detail/CVE-2023-33008
github.com/apache/johnzon/commit/34ad9a6b296ae7b4667c3cf0037998e451499ea4
issues.apache.org/jira/browse/JOHNZON-397
github.com/advisories/GHSA-crqg-jrpj-fc84
github.com/CVEProject/cvelistV5/tree/main/cves/2023/33xxx/CVE-2023-33008.json
github.com/apache/johnzon