SSRF in @opennextjs/cloudflare<1.3.0 via /_next/image allows image load
CVE-2025-6087 Published on June 16, 2025
SSRF vulnerability in opennextjs-cloudflare via /_next/image endpoint
A Server-Side Request Forgery (SSRF) vulnerability was identified in the @opennextjs/cloudflare package. The vulnerability stems from an unimplemented feature in the Cloudflare adapter for Open Next, which allowed unauthenticated users to proxy arbitrary remote content via the /_next/image endpoint.
This issue allowed attackers to load remote resources from arbitrary hosts under the victim sites domain for any site deployed using the Cloudflare adapter for Open Next.
For example:
https://victim-site.com/_next/image?url=https://attacker.com
In this example, attacker-controlled content from attacker.com is served through the victim sites domain (victim-site.com), violating the same-origin policy and potentially misleading users or other services.
Impact:
* SSRF via unrestricted remote URL loading
* Arbitrary remote content loading
* Potential internal service exposure or phishing risks through domain abuse
Mitigation:
The following mitigations have been put in place:
* Server side updates to Cloudflares platform to restrict the content loaded via the /_next/image endpoint to images. The update automatically mitigates the issue for all existing and any future sites deployed to Cloudflare using the affected version of the Cloudflare adapter for Open Next
* Root cause fix https://github.com/opennextjs/opennextjs-cloudflare/pull/727 to the Cloudflare adapter for Open Next. The patched version of the adapter is found here @opennextjs/cloudflare@1.3.0 https://www.npmjs.com/package/@opennextjs/cloudflare/v/1.3.0
* Package dependency update https://github.com/cloudflare/workers-sdk/pull/9608 to create-cloudflare (c3) to use the fixed version of the Cloudflare adapter for Open Next. The patched version of create-cloudflare is found here: create-cloudflare@2.49.3 https://www.npmjs.com/package/create-cloudflare/v/2.49.3
In addition to the automatic mitigation deployed on Cloudflares platform, we encourage affected users to upgrade to @opennext/cloudflare v1.3.0 and use the remotePatterns https://nextjs.org/docs/pages/api-reference/components/image#remotepatterns filter in Next config https://nextjs.org/docs/pages/api-reference/components/image#remotepatterns if they need to allow-list external urls with images assets.
Weakness Type
What is a SSRF Vulnerability?
The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination. By providing URLs to unexpected hosts or ports, attackers can make it appear that the server is sending the request, possibly bypassing access controls such as firewalls that prevent the attackers from accessing the URLs directly. The server can be used as a proxy to conduct port scanning of hosts in internal networks, use other URLs such as that can access documents on the system (using file://), or use other protocols such as gopher:// or tftp://, which may provide greater control over the contents of requests.
CVE-2025-6087 has been classified to as a SSRF vulnerability or weakness.
Products Associated with CVE-2025-6087
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Vulnerable Packages
The following package name and versions may be associated with CVE-2025-6087
| Package Manager | Vulnerable Package | Versions | Fixed In |
|---|---|---|---|
| npm | @opennextjs/cloudflare | < 1.17.1 | 1.17.1 |
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.