CVE-2023-22491
HighCVSS 8.1Exploitation Probability (EPSS)
Low risk47th percentile - higher than 47% of all known CVEs
Summary
The gatsby-transformer-remark plugin in the Gatsby framework before versions 5.25.1 and 6.3.2 passes input to the gray-matter package, which is vulnerable to JavaScript injection in its default configuration. The vulnerability occurs when processing data in data mode (querying MarkdownRemark nodes via GraphQL), and injected JavaScript executes on the build server.
Risk Assessment
An attacker can exploit unsanitized input to execute arbitrary JavaScript on the build server, potentially leading to compromise of the build process or data theft.
Recommendation
Upgrade the gatsby-transformer-remark plugin to version 5.25.1 or 6.3.2 immediately. If not possible, sanitize all input before passing it to the plugin.
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Original NVD description (English source)
Gatsby is a free and open source framework based on React that helps developers build websites and apps. The gatsby-transformer-remark plugin prior to versions 5.25.1 and 6.3.2 passes input through to the `gray-matter` npm package, which is vulnerable to JavaScript injection in its default configuration, unless input is sanitized. The vulnerability is present in gatsby-transformer-remark when passing input in data mode (querying MarkdownRemark nodes via GraphQL). Injected JavaScript executes in the context of the build server. To exploit this vulnerability untrusted/unsanitized input would need to be sourced by or added into a file processed by gatsby-transformer-remark. A patch has been introduced in `[email protected]` and `[email protected]` which mitigates the issue by disabling the `gray-matter` JavaScript Frontmatter engine. As a workaround, if an older version of `gatsby-transformer-remark` must be used, input passed into the plugin should be sanitized ahead of processing. It is encouraged for projects to upgrade to the latest major release branch for all Gatsby plugins to ensure the latest security updates and bug fixes are received in a timely manner.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS

