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CVE-2010-1666

22
FAUCET Score

CVE-2010-1666 describes a buffer overflow vulnerability in Dan Pascu python-cjson version 1.0.5, specifically when UCS-4 encoding is enabled. Attackers can exploit this by providing crafted Unicode input to the cjson.encode function, leading to a denial of service (application crash) or potentially other unspecified impacts. With a CVSS score of 6.8 (medium severity), this vulnerability can be exploited remotely with medium attack complexity. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
1.0.5CPE matchmatch criteria
cpe:2.3:a:dan_pascu:python-cjson:1.0.5:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

6.8MEDIUM

AV:N/AC:M/Au:N/C:P/I:P/A:P

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
6.4
CvssVersion
2.0

Exploit Intelligence

EPSS Score
1.67%
Probability of exploitation in next 30 days
EPSS Percentile
74.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0167 is in the 51st percentile among its peer group of 19,955 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

pippatch availablevia ghsa
Product: python-cjsonFixed in: 1.0.5.1

Vendor Advisories (1)

pipGHSA-cqmh-mpx2-g633medium

Improper Restriction of Operations within the Bounds of a Memory Buffer in python-cjson

May 17, 2022

References

bugs.launchpad.net / ubuntu/+source/python-cjson/+bug/585274
secunia.com / advisories/40335
Vendor Advisory
secunia.com / advisories/40500
debian.org / security/2010/dsa-2068
vupen.com / english/advisories/2010/1774