{"cve":"CVE-2009-4924","nvd":{"published":"2010-07-02T19:30:00.863","modified":"2026-06-16T23:14:37.813","status":"Modified","description":"Dan Pascu 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.","cvss_v4":null,"cvss_v3":null,"cwes":["CWE-79"],"references":["http://pypi.python.org/pypi/python-cjson/","http://t3.dotgnu.info/blog/insecurity/quotes-dont-help.html","http://pypi.python.org/pypi/python-cjson/","http://t3.dotgnu.info/blog/insecurity/quotes-dont-help.html"],"products":["dan_pascu:python-cjson"],"source":"nvd","synced_at":"2026-10-19T19:56:26.512081652+00:00"},"epss":{"cve":"CVE-2009-4924","score":0.01354,"percentile":0.71614,"date":"2026-11-01"},"kev":null,"osv":[{"id":"GHSA-95jp-77w6-qj52","url":"https://osv.dev/vulnerability/GHSA-95jp-77w6-qj52","summary":"Cross-site Scripting in python-cjson","modified":"2024-10-25T21:00:54.213007Z","packages":[{"ecosystem":"PyPI","name":"python-cjson","purl":"pkg:pypi/python-cjson","ranges":["<1.1.0"],"fixed":["1.1.0"]}]},{"id":"PYSEC-2010-26","url":"https://osv.dev/vulnerability/PYSEC-2010-26","summary":"","modified":"2023-11-08T03:56:54.492097Z","packages":[{"ecosystem":"PyPI","name":"python-cjson","purl":"pkg:pypi/python-cjson","ranges":["<1.1.0"],"fixed":["1.1.0"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}