Nuxt OG Image is vulnerable to reflected XSS via query parameter injection into HTML attributes

Exploitation

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

CVSS

6.1 · CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

EPSS

• CVE-2026-34405: 0.22% estimated exploitation activity in the next 30 days; percentile 13.10 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.

As published by the source; long descriptions are shortened.

Product: Nuxt OG Image Version: 6.1.2 CWE-ID: CWE-79: Improper Neutralization of Input During Web Page Generation Description: Incorrect parsing of GET parameters leads to the possibility of HTML injection and JavaScript code injection. Impact: Client-Side JavaScript Execution Exploitation condition: An external user Mitigation: Correct the logic of parsing GET parameters and their subsequent implementation into the generated page. Researcher: Dmitry Prokhorov (Positive Technologies) Research During the analysis of the nuxt-og-image package, which is shipped with the nuxt-seo package, a zero‑day vulnerability was discovered. This research revealed that the image‑generation component by the URI: /og/d/ (and, in older versions, /og-image/) contains a vulnerability that allows injection of arbitrary attributes into the HTML page body. The vulnerability was reproduced using the standard configuration and the default templates. Listing 1. The content of the configuration file…

Published by the source

31 Mar 2026, 23:27 UTC

Last modified by the source

6 Apr 2026, 16:48 UTC

Source last checked

26 Oct 2026, 12:47 UTC

1. Revision 2 · amended · 26 Oct 2026

   Amended from ghsa record GHSA-mg36-wvcr-m75h

2. Revision 1 · created · 24 Oct 2026

   Published from osv record GHSA-mg36-wvcr-m75h

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

# Patch Next advisory brief: CVE-2026-34405

Advisory: Nuxt OG Image is vulnerable to reflected XSS via query parameter injection into HTML attributes
IDs: CVE-2026-34405, GHSA-mg36-wvcr-m75h
Record: https://patchnext.com/advisories/cve-2026-34405 (revision 2, source checked 26 Oct 2026, 12:47 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: Medium (CVSS 6.1)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: nuxt-og-image 6.2.5. A vendor fix does not mean a deployment is fixed.

## Affected components
- npm nuxt-og-image: affected < 6.2.5; fixed in 6.2.5

## Suggested inspection (read-only)
- `npm ls nuxt-og-image --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 nuxt-og-image.
- 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-mg36-wvcr-m75h (OSV record GHSA-mg36-wvcr-m75h lists affected ranges: npm nuxt-og-image >=0 <6.2.5 (fixed))
- Verified: https://github.com/advisories/GHSA-mg36-wvcr-m75h (GitHub-reviewed advisory GHSA-mg36-wvcr-m75h lists affected ranges: npm nuxt-og-image >=0 <6.2.5)

Commands are suggestions: review each one before running it.