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Medium, CVSS 5.6amended

Quasar Framework: App Vite SSG page output paths can escape the configured distribution directory

CVE-2026-106108GHSA-vhhq-m2gm-rwc9

What to do

Vendor fix available. Upgrade each affected package to the fixed version on its release line (@quasar/app-vite 3.3.0), 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
5.6 · CVSS:4.0/AV:L/AC:H/AT:P/PR:N/UI:A/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N · score source
EPSS
  • CVE-2026-106108: 0.14% estimated exploitation activity in the next 30 days; percentile 2.99 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.
Source description

As published by the source; long descriptions are shortened.

Summary During an SSG build, page definitions returned by `getSsgPages()` can provide custom `dir` and `filename` values. The builder joined those values to `build.distDir` and wrote the generated page without verifying that the final destination remained inside the distribution directory.

Details A page definition containing parent-directory traversal could cause the build to create a new HTML file outside `build.distDir`. An existing symlink below the distribution directory could also redirect a generated file or newly created directories outside the output tree. Quasar application configuration and SSG page definitions are trusted input by default, so this is not normally a remote file-write primitive. The issue becomes relevant when an application derives SSG page definitions from external or otherwise untrusted content, or when build configuration is compromised. Existing files are protected by the SSG renderer's no-overwrite behavior, but new files and directories can be…

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

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

  2. Revision 2 · amended ·

    Amended from osv record GHSA-vhhq-m2gm-rwc9

  3. Revision 1 · created ·

    Published from ghsa record GHSA-vhhq-m2gm-rwc9

Agent brief

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# Patch Next advisory brief: CVE-2026-106108

Advisory: Quasar Framework: App Vite SSG page output paths can escape the configured distribution directory
IDs: CVE-2026-106108, GHSA-vhhq-m2gm-rwc9
Record: https://patchnext.com/advisories/cve-2026-106108 (revision 3, source checked 25 Oct 2026, 00:12 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: Medium (CVSS 5.6)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: @quasar/app-vite 3.3.0. A vendor fix does not mean a deployment is fixed.

## Affected components
- npm @quasar/app-vite: affected >= 3.1.0, < 3.3.0; fixed in 3.3.0

## Suggested inspection (read-only)
- `npm ls @quasar/app-vite --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 @quasar/app-vite.
- 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://github.com/advisories/GHSA-vhhq-m2gm-rwc9 (GitHub-reviewed advisory GHSA-vhhq-m2gm-rwc9 lists affected ranges: npm @quasar/app-vite >=3.1.0 <=3.2.0)
- Verified: https://osv.dev/vulnerability/GHSA-vhhq-m2gm-rwc9 (OSV record GHSA-vhhq-m2gm-rwc9 lists affected ranges: npm @quasar/app-vite >=3.1.0 <3.3.0 (fixed))

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