nuxt-modules og-image up to 6.6.x OG Image font-assets/node.js decodeOgImageParams fonts input validation

Summaryinfo

A vulnerability described as critical has been identified in nuxt-modules og-image up to 6.6.x. This affects the function decodeOgImageParams of the file font-assets/node.js of the component OG Image Handler. Such manipulation of the argument fonts leads to input validation. This vulnerability is uniquely identified as CVE-2026-61793. The attack can be launched remotely. No exploit exists. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in nuxt-modules og-image up to 6.6.x. It has been rated as critical. Affected by this issue is the function decodeOgImageParams of the file font-assets/node.js of the component OG Image Handler. The manipulation of the argument fonts with an unknown input leads to a input validation vulnerability. Using CWE to declare the problem leads to CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. Impacted is confidentiality, integrity, and availability. CVE summarizes:

Nuxt OG Image generates OG Images with Vue templates in Nuxt. From 6.0.2 until 6.7.0, nuxt-og-image exposes the unauthenticated /_og/d/** route when the documented defaults security.strict = false and security.secret = "" are used, and base64url-decodes the fonts parameter through decodeOgImageParams. Attacker-controlled fonts[].path values flow through loadDefinedFonts into the font-assets/node.js binding, which performs a server-side fetch without validating the URL scheme, origin, resolved address, or redirects. This permits blind requests to loopback, private, link-local, cloud metadata, and other internal HTTP services, while differences in the outer response status and timing can reveal service reachability. Slow targets can also occupy OG image render workers for the configured fetch and render timeouts. This issue is fixed in version 6.7.0.

The advisory is available at github.com. This vulnerability is handled as CVE-2026-61793 since 07/10/2026. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. Technical details are known, but there is no available exploit.

Upgrading to version 6.7.0 eliminates this vulnerability.

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Productinfo

Vendor

• nuxt-modules

Name

• og-image

Version

• 6.0
• 6.1
• 6.2
• 6.3
• 6.4
• 6.5
• 6.6

Website

• Product: https://github.com/nuxt-modules/og-image/

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