CVE-2020-35381: Denial of Service in jsonparser
Summary
CVE-2020-35381: Denial of Service in jsonparser. Affects github.com/buger/jsonparser versions < 1.1.1. Fixed in 1.1.1. How to fix ↓
Also tracked for
- golang-github-buger-jsonparser · Debian:11
The same CVE-2020-35381 is tracked separately for each ecosystem and vendor. Its fix information is the same; the package and affected versions differ.
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Background
The package under scrutiny is github.com/buger/jsonparser, which is an open-source Go library for parsing JSON data. It provides efficient and flexible methods to extract values from JSON documents. However, a vulnerability has been discovered in versions prior to 1.1.1, which can lead to a denial of service (DoS) attack. This vulnerability can be exploited through a GET call.
Vulnerability Detail
The vulnerability (CVE-2020-35381) allows attackers to cause a denial of service by exploiting a flaw in the jsonparser package. By making a GET call, an attacker can trigger the vulnerability and disrupt the normal functioning of the application. This can lead to service unavailability and potential impact on the availability of the system. The vulnerability has a CVSS score of 7.5, indicating a high severity level.
How To Fix
Latest published version: v1.6.1 as of 22 Oct 2026
go get github.com/buger/jsonparser@v1.6.1Upgrading to it may include breaking changes; the version below is the minimum fixed release for this vulnerability.
If you need the minimum change
1.1.1
This is the first release that contains the fix.
go get github.com/buger/jsonparser@v1.1.1Tip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
There is no specific workaround mentioned for this vulnerability. The recommended approach is to update the jsonparser package to the fixed version.
Conclusion
In conclusion, the github.com/buger/jsonparser package prior to version 1.1.1 is vulnerable to a denial of service attack. To mitigate this vulnerability, it is crucial to update the package to the fixed version. Vulert's playground can be used to check if your application is affected by this vulnerability. For further assistance, you can contact DevNack.com.
See every vulnerability recorded for github.com/buger/jsonparser →
FAQ
The vulnerability can lead to a denial of service (DoS) attack, causing service unavailability and potential disruption of the application's functionality.
You can use Vulert's playground (https://vulert.com/scanner) to check if your application is affected by this vulnerability. It analyzes your Gopkg.lock file and provides real-time alerts for open-source vulnerabilities.
The CVSS score of this vulnerability is 7.5, indicating a high severity level.
There is no specific information provided about known exploits for this vulnerability. However, it is important to update the jsonparser package to the fixed version to mitigate the risk.
For further support on vulnerability remediation, you can reach out to info@devnack.com. Additionally, you can refer to the official documentation and community resources for the jsonparser package to gain a deeper understanding of the vulnerability and its fix.
References
Related vulnerabilities
Recent vulnerabilities recorded for github.com/buger/jsonparser.
