Information disclosure in Gatsbyjs Gatsby

CVE-2021-32770

Gatsby is a framework for building websites. The gatsby-source-wordpress plugin prior to versions 4.0.8 and 5.9.2 leaks .htaccess HTTP Basic Authentication variables into the app.js bundle during build-time. Users who are not initializing basic authentication credentials in the gatsby-config.js are not affected. A patch has been introduced in gatsby-source-wordpress@4.0.8 and gatsby-source-wordpress@5.9.2 which mitigates the issue by filtering all variables specified in the `auth: { }` section. Users that depend on this functionality are advised to upgrade to the latest release of gatsby-source-wordpress, run `gatsby clean` followed by a `gatsby build`. One may manually edit the app.js file post-build as a workaround.

Vulnerability class: Information Disclosure

EPSS: 0.014 (70.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2021-32770?
CVE-2021-32770 is a high-severity vulnerability in Gatsbyjs Gatsby, classified under Information Disclosure. CVSS score: 7.5/10. Published 2021-07-15.
How severe is CVE-2021-32770?
High severity. CVSS v3 base score is 7.5 out of 10.