CVE-2009-4924: n/a vulnerability

CVE-2009-4924: Dan Pascu python-cjson 1.0.5 does not properly handle a ['/'] argument to cjson.encode, which makes it easi...

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.

UnknownCVSS not scoredNot KEV-listedUpdatedSep 17, 2024, 01:11 UTC (UTC+00:00)

Security readout for executives and security teams

This is a legacy Python JSON encoding issue. If an application used python-cjson 1.0.5 to place encoded data inside browser script content, a crafted value could help trigger cross-site scripting in Firefox. The sources do not provide severity, CVSS, confirmed exploitation, or a named fix. Likely exposure is limited to legacy applications using python-cjson 1.0.5 and embedding cjson.encode output into HTML script contexts consumed by browsers. Evidence for other versions, products, or deployment patterns is not provided. Set priority after confirming usage. If the organization does not use python-cjson 1.0.5, business urgency is low. If internet-facing applications embed its output in script content, treat it as a legacy XSS risk requiring prompt remediation planning. Mitigation focus: Inventory applications for python-cjson, especially version 1.0.5.; Review whether cjson.encode output is embedded in SCRIPT contexts.; Check project or vendor guidance for fixed versions or safe replacements..

Prepared: Jun 28, 2026, 02:01 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: Jul 2, 2010, 19:00 UTC (UTC+00:00)

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

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1Source links

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CVE List V5 sourceCVE List V5

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

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Weakness

CWE details

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