CVE-2021-32770
Basic-auth app bundle credential exposure in gatsby-source-wordpress
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 [email protected] and [email protected] 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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- None
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
Basic-auth app bundle credential exposure in gatsby-source-wordpress
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 [email protected] and [email protected] 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.
- Record
CVE-2021-32770- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N - Weakness
- CWE-200
- Updated
- 2026-11-02
EUVDEUVD-2021-1490
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 [email protected] and [email protected] 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.
- Record
EUVD-2021-1490- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-rqjw-p5vr-c695
Basic-auth app bundle credential exposure in gatsby-source-wordpress
Impact
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.
Example affected gatsby-config.js:
resolve: 'gatsby-source-wordpress',
auth: {
htaccess: {
username: leaked_username
password: leaked_password,
},
},
Patches
A patch has been introduced in [email protected] and [email protected] 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.
Workarounds
There is no known workaround at this time, other than manually editing the app.js file post-build.
For more information
Email us at [email protected]
- Record
GHSA-rqjw-p5vr-c695- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N - Weakness
- CWE-200, CWE-522
- Updated
- 2026-11-02
NVD
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 [email protected] and [email protected] 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.
- Record
CVE-2021-32770- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N - CVSS 2.0
- 5.0 Medium
AV:N/AC:L/Au:N/C:P/I:N/A:N - Weakness
- CWE-200, CWE-522
- Updated
- 2026-11-02
OSV
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 [email protected] and [email protected] 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.
- Record
CVE-2021-32770- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N - Updated
- 2026-11-02
OSVGHSA-rqjw-p5vr-c695
Basic-auth app bundle credential exposure in gatsby-source-wordpress
Impact
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.
Example affected gatsby-config.js:
resolve: 'gatsby-source-wordpress',
auth: {
htaccess: {
username: leaked_username
password: leaked_password,
},
},
Patches
A patch has been introduced in [email protected] and [email protected] 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.
Workarounds
There is no known workaround at this time, other than manually editing the app.js file post-build.
For more information
Email us at [email protected]
- Record
GHSA-rqjw-p5vr-c695- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N - Weakness
- CWE-200, CWE-522
- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
gatsby-source-wordpressnpm |
before 4.0.8 | 4.0.8 |
gatsby-source-wordpressnpm |
5.0.0 up to 5.9.2 | 5.9.2 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-32770 is a high vulnerability (CVSS 7.5) in Gatsbyjs Gatsby, published July 15, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.41%, the 72nd percentile. Fixed in gatsby-source-wordpress 4.0.8.