Medium

Cross-site Scripting in python-cjson

  • Disclosed: 02.07.2010
  • Updated: 11.10.2026 11:20

Python-cjson 1.0.5 does not properly handle a ['/'] argument to cjson.encode, which makes it easier for remote attackers to conduct certain cross-site scripting (XSS) attacks involving Firefox and the end tag of a SCRIPT element.

Affected software

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PlatformPackageVulnerable versionsFixed in
Python (PyPI) python-cjson < 1.1.0 1.1.0

References

CVSS score 6.1/10
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Weakness (CWE)
CWE-79
Platform
Python (PyPI)
Package
python-cjson
Disclosed
02.07.2010
Updated
11.10.2026 11:20

Sources and licenses

OSV / GitHub Advisory Database - PYSEC-2010-26 - PyPA Advisory Database; CC BY 4.0

OSV / GitHub Advisory Database - GHSA-95jp-77w6-qj52 - CC BY 4.0

Vulnerability history: python-cjson

All published vulnerabilities of this package (Python (PyPI)), newest first. Shows whether this is a one-off slip or a package that needs watching.

Total entries
2
First → latest
07.2010 07.2010
Without a fix
0
Exploited in attacks
0

Severity breakdown

  • Medium 2

Disclosures per year

  1. 2017: 0
  2. 2018: 0
  3. 2019: 0
  4. 2020: 0
  5. 2021: 0
  6. 2022: 0
  7. 2023: 0
  8. 2024: 0
  9. 2025: 0
  10. 2026: 0

earlier: 2

  1. Cross-site Scripting in python-cjson this entry
    Medium · 6.1 CVE-2009-4924 < 1.1.0 1.1.0

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