CVE-2010-1666
Buffer overflow in Dan Pascu python-cjson 1.0.5, when UCS-4 encoding is enabled, allows context-dependent attackers to cause a denial of…
- 6.8MediumCVSS base score
- 1.7%Exploitation in 30 daysEPSS · top 23% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
Buffer overflow in Dan Pascu python-cjson 1.0.5, when UCS-4 encoding is enabled, allows context-dependent attackers to cause a denial of service (application crash) or possibly have unspecified other impact via vectors involving crafted Unicode input to the cjson.encode function.
Timeline
ID reserved
By mitre
- 2 months later
· 2 months later
Published
- 14 years later
· 14 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 | 2.0 | Medium6.8 | AV:N/AC:M/Au:N/C:P/I:P/A:P |
- EPSS (exploitation in 30 days)
- 1.7% · top 23% of all CVEs (11 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 6.8.
Affected products
n/a
- affected n/a
Affected packages
From reviewed advisories of the GitHub Advisory Database.
- PyPIpython-cjsonGHSA-cqmh-mpx2-g633 (opens in a new tab)
References
5
- ADV-2010-1774 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
- DSA-2068 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
- 40335 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- 40500 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- https://bugs.launchpad.net/ubuntu/+source/python-cjson/+bug/585274 (opens in a new tab)x_refsource_CONFIRMx_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-2010-0029 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-cqmh-mpx2-g633 (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-2010-1666)Record last updated .