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CVE-2020-10663The JSON gem through 2.2.0 for Ruby, as used in Ruby 2.4 through 2.4.9, 2.5 through 2.5.7, and 2.6 through 2.6.5, has an Unsafe Object…
- 7.5HighCVSS base score
- 6.8%Exploitation in 30 daysEPSS · top 5.9% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
The JSON gem through 2.2.0 for Ruby, as used in Ruby 2.4 through 2.4.9, 2.5 through 2.5.7, and 2.6 through 2.6.5, has an Unsafe Object Creation Vulnerability. This is quite similar to CVE-2013-0269, but does not rely on poor garbage-collection behavior within Ruby. Specifically, use of JSON parsing methods can lead to creation of a malicious object within the interpreter, with adverse effects that are application-dependent.
Timeline
ID reserved
By mitre
- 41 days later
· 41 days later
Published
- 4 years later
· 4 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.1 | High7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N |
- EPSS (exploitation in 30 days)
- 6.8% · top 5.9% of all CVEs (13 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.5.
Affected products
n/a
- affected n/a
Affected packages
From reviewed advisories of the GitHub Advisory Database.
- RubyGemsjsonGHSA-jphg-qwrw-7w9g (opens in a new tab)
References
References19
- https://www.ruby-lang.org/en/news/2020/03/19/json-dos-cve-2020-10663/ (opens in a new tab)x_refsource_CONFIRMx_transferred
- [debian-lts-announce] 20200430 [SECURITY] [DLA 2192-1] ruby2.1 security update (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- openSUSE-SU-2020:0586 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- FEDORA-2020-26df92331a (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
- FEDORA-2020-d171bf636d (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
- FEDORA-2020-a95706b117 (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
- DSA-4721 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
- [zookeeper-dev] 20200913 [jira] [Created] (ZOOKEEPER-3933) owasp failing with json-simple-1.1.1.jar: CVE-2020-10663, CVE-2020-7712 (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- [zookeeper-issues] 20200913 [jira] [Created] (ZOOKEEPER-3933) owasp failing with json-simple-1.1.1.jar: CVE-2020-10663, CVE-2020-7712 (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- [zookeeper-issues] 20200913 [jira] [Resolved] (ZOOKEEPER-3933) owasp failing with json-simple-1.1.1.jar: CVE-2020-10663, CVE-2020-7712 (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- [zookeeper-issues] 20200930 [jira] [Comment Edited] (ZOOKEEPER-3933) owasp failing with json-simple-1.1.1.jar: CVE-2020-10663, CVE-2020-7712 (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- [zookeeper-issues] 20200930 [jira] [Commented] (ZOOKEEPER-3933) owasp failing with json-simple-1.1.1.jar: CVE-2020-10663, CVE-2020-7712 (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- [zookeeper-issues] 20200930 [jira] [Issue Comment Deleted] (ZOOKEEPER-3933) owasp failing with json-simple-1.1.1.jar: CVE-2020-10663, CVE-2020-7712 (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- https://support.apple.com/kb/HT211931 (opens in a new tab)x_refsource_CONFIRMx_transferred
- 20201215 APPLE-SA-2020-12-14-4 Additional information for APPLE-SA-2020-11-13-1 macOS Big Sur 11.0.1 (opens in a new tab)mailing-listx_refsource_FULLDISCx_transferred
- [zookeeper-issues] 20210106 [jira] [Updated] (ZOOKEEPER-3933) owasp failing with json-simple-1.1.1.jar: CVE-2020-10663, CVE-2020-7712 (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- https://security.netapp.com/advisory/ntap-20210129-0003/ (opens in a new tab)x_refsource_CONFIRMx_transferred
- [zookeeper-issues] 20210404 [jira] [Updated] (ZOOKEEPER-3933) owasp failing with json-simple-1.1.1.jar: CVE-2020-10663, CVE-2020-7712 (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- [zookeeper-issues] 20210404 [jira] [Assigned] (ZOOKEEPER-3933) owasp failing with json-simple-1.1.1.jar: CVE-2020-10663, CVE-2020-7712 (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2020-0563 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-jphg-qwrw-7w9g (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2020-10663)Record last updated .