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Medium, CVSS 5.3amended

@grackle-ai/server has Missing Content-Security-Policy and X-Frame-Options Headers

GHSA-3mjm-x6gw-2x42

What to do

Vendor fix available. Upgrade each affected package to the fixed version on its release line (@grackle-ai/server 0.70.4), redeploy, then verify what is actually installed.

This page has no inventory attached, so it cannot say whether you are affected. A vendor fix is not proof that your deployment is fixed.

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Affected packages

Sources

Severity and exploitation
Exploitation
No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.
CVSS 4.0
5.3 · CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N · score source
EPSS
No dated EPSS signal available.
Source description

As published by the source; long descriptions are shortened.

Impact The HTTP server does not set Content-Security-Policy, X-Frame-Options, or X-Content-Type-Options headers on any response. This reduces defense-in-depth against XSS, clickjacking, and MIME-sniffing attacks. While the current XSS attack surface is small (React-markdown is configured safely, no dangerouslySetInnerHTML, Vite does not generate source maps), the absence of these headers means any future XSS vulnerability would have no secondary defense layer. Affected code: - packages/server/src/index.ts — all res.writeHead() calls only set Content-Type, with no security headers Patches 0.70.4 Fix: Add security headers to all HTML/API responses: Workarounds Use a reverse proxy (nginx, Caddy) in front of the Grackle server to inject security headers. References - CWE-693: Protection Mechanism Failure - OWASP: HTTP Security Response Headers - File: packages/server/src/index.ts

Dates and revisions
Published by the source
Last modified by the source
Source last checked
  1. Revision 3 · amended ·

    Amended from ghsa record GHSA-3mjm-x6gw-2x42

  2. Revision 2 · amended ·

    Reviewed OSV alias/range/CVSS4 correction; package source scopes and original publication preserved. No customer finding resolved.

  3. Revision 1 · created ·

    Published from osv record GHSA-3mjm-x6gw-2x42

Agent brief

Preview the exact text before you copy it. Commands are read-only suggestions; review them before running anything.

# Patch Next advisory brief: GHSA-3mjm-x6gw-2x42

Advisory: @grackle-ai/server has Missing Content-Security-Policy and X-Frame-Options Headers
IDs: GHSA-3mjm-x6gw-2x42
Record: https://patchnext.com/advisories/ghsa-3mjm-x6gw-2x42 (revision 3, source checked 26 Oct 2026, 12:46 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: Medium (CVSS 5.3)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: @grackle-ai/server 0.70.4. A vendor fix does not mean a deployment is fixed.

## Affected components
- npm @grackle-ai/server: affected <= 0.70.3; fixed in 0.70.4

## Suggested inspection (read-only)
- `npm ls @grackle-ai/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 @grackle-ai/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-3mjm-x6gw-2x42 (OSV record GHSA-3mjm-x6gw-2x42 lists affected ranges: npm @grackle-ai/server >=0 <0.70.4 (fixed))
- Verified: https://github.com/advisories/GHSA-3mjm-x6gw-2x42 (GitHub-reviewed advisory GHSA-3mjm-x6gw-2x42 lists affected ranges: npm @grackle-ai/server >=0 <=0.70.3)

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