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High, CVSS 7.3amended

@saltcorn/plugins-loader unsanitized plugin name leads to a remote code execution (RCE) vulnerability when creating plugins using git source

GHSA-fm76-w8jw-xf8m

What to do

Vendor fix available. Upgrade each affected package to the fixed version on its release line (@saltcorn/plugins-loader 1.0.0-beta.14), 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
7.3 · CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P · score source
EPSS
No dated EPSS signal available.
Source description

As published by the source; long descriptions are shortened.

Summary When creating a new plugin using the git source, the user-controlled value req.body.name is used to build the plugin directory where the location will be cloned. The API used to execute the git clone command with the user-controlled data is childprocess.execSync. Since the user-controlled data is not validated, a user with admin permission can add escaping characters and execute arbitrary commands, leading to a command injection vulnerability. Details Relevant code from source (req.body) to sink (childprocess.execSync). - file: https://github.com/saltcorn/saltcorn/blob/v1.0.0-beta.13/packages/server/routes/plugins.js#L1400 - file: https://github.com/saltcorn/saltcorn/blob/v1.0.0-beta.13/packages/saltcorn-data/models/plugin.ts#L44 - file: https://github.com/saltcorn/saltcorn/blob/v1.0.0-beta.13/packages/server/loadplugins.js#L64-L65 - file: https://github.com/saltcorn/saltcorn/blob/v1.0.0-beta.13/packages/plugins-loader/plugininstaller.js#L41-L61 - file:…

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

    Amended from ghsa record GHSA-fm76-w8jw-xf8m

  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-fm76-w8jw-xf8m

Agent brief

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# Patch Next advisory brief: GHSA-fm76-w8jw-xf8m

Advisory: @saltcorn/plugins-loader unsanitized plugin name leads to a remote code execution (RCE) vulnerability when creating plugins using git source
IDs: GHSA-fm76-w8jw-xf8m
Record: https://patchnext.com/advisories/ghsa-fm76-w8jw-xf8m (revision 3, source checked 26 Oct 2026, 12:31 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: High (CVSS 7.3)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: @saltcorn/plugins-loader 1.0.0-beta.14. A vendor fix does not mean a deployment is fixed.

## Affected components
- npm @saltcorn/plugins-loader: affected <= 1.0.0-beta.13; fixed in 1.0.0-beta.14

## Suggested inspection (read-only)
- `npm ls @saltcorn/plugins-loader --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 @saltcorn/plugins-loader.
- 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-fm76-w8jw-xf8m (OSV record GHSA-fm76-w8jw-xf8m lists affected ranges: npm @saltcorn/plugins-loader >=0 <1.0.0-beta.14 (fixed))
- Verified: https://github.com/advisories/GHSA-fm76-w8jw-xf8m (GitHub-reviewed advisory GHSA-fm76-w8jw-xf8m lists affected ranges: npm @saltcorn/plugins-loader >=0 <=1.0.0-beta.13)

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