Vulnerability allowing for reading internal HTTP resources

Exploitation

No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.

CVSS

not scored

EPSS

No dated EPSS signal available.

As published by the source; long descriptions are shortened.

Impact The vulnerability allows for reading and outputting files served by other services on the internal network in which the export server is hosted. If the export server is exposed to the internet, this potentially allows a malicious user to gain read access to internal web-resources. The impact is limited to internal services that serve content via. HTTP(S), and requires the attacker to know internal hostnames/IP addresses. The previous versions have been marked as deprecated on NPM. Patches Version 2.1.0 released alongside this security advisory addresses the issue. Please note that this release is not backwards compatible out of the box. See the changelog for details. Additionally, it's also recommended to upgrade to the latest version of Highcharts to get the added input sanitation implemented in version 9.0 and later. Workarounds There are no known workarounds to the issue - an upgrade to version 2.1.0 is required. For more information If you have any questions or comments…

Published by the source

12 Mar 2021, 23:04 UTC

Last modified by the source

9 Jan 2023, 05:04 UTC

Source last checked

26 Oct 2026, 12:15 UTC

1. Revision 2 · amended · 26 Oct 2026

   Amended from ghsa record GHSA-hfwx-c7q6-g54c

2. Revision 1 · created · 24 Oct 2026

   Published from osv record GHSA-hfwx-c7q6-g54c

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# Patch Next advisory brief: GHSA-hfwx-c7q6-g54c

Advisory: Vulnerability allowing for reading internal HTTP resources
IDs: GHSA-hfwx-c7q6-g54c
Record: https://patchnext.com/advisories/ghsa-hfwx-c7q6-g54c (revision 2, source checked 26 Oct 2026, 12:15 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: Unrated
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: highcharts-export-server 2.1.0. A vendor fix does not mean a deployment is fixed.

## Affected components
- npm highcharts-export-server: affected <= 2.0.30; fixed in 2.1.0

## Suggested inspection (read-only)
- `npm ls highcharts-export-server --all`: lists every installed copy and version, including transitive ones. Run in the project root after `npm ci`.

## Supported action
Upgrade each affected component to a fixed version on its release line. For a transitive dependency, upgrade the parent package or add an override or constraint, then regenerate the lockfile. Redeploy every environment that ran an affected version.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on highcharts-export-server.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://osv.dev/vulnerability/GHSA-hfwx-c7q6-g54c (OSV record GHSA-hfwx-c7q6-g54c lists affected ranges: npm highcharts-export-server >=0 <2.1.0 (fixed))
- Verified: https://github.com/advisories/GHSA-hfwx-c7q6-g54c (GitHub-reviewed advisory GHSA-hfwx-c7q6-g54c lists affected ranges: npm highcharts-export-server >=0 <=2.0.30)

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