Search criteria
1 vulnerability by opennextjs
CVE-2025-6087 (GCVE-0-2025-6087)
Vulnerability from cvelistv5 – Published: 2025-06-16 18:30 – Updated: 2025-06-16 18:55
VLAI?
Summary
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 site’s 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 site’s 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 Cloudflare’s 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 Cloudflare’s 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.
Severity ?
CWE
- CWE-918 - Server-Side Request Forgery (SSRF)
Assigner
References
Credits
Edward Coristine
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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 \u003c/span\u003e\u003cspan style=\"background-color: transparent;\"\u003e/_next/image\u003c/span\u003e\u003cspan style=\"background-color: transparent;\"\u003e endpoint.\u003c/span\u003e\u003c/p\u003e\u003cp\u003e\u003cspan style=\"background-color: transparent;\"\u003eThis issue allowed attackers to load remote resources from arbitrary hosts under the victim site\u2019s domain for any site deployed using the Cloudflare adapter for Open Next.\u0026nbsp;\u003c/span\u003e\u003c/p\u003e\u003cp\u003e\u003cspan style=\"background-color: transparent;\"\u003e\u003cbr\u003e\u003c/span\u003e\u003c/p\u003e\u003cp\u003e\u003cspan style=\"background-color: transparent;\"\u003eFor example:\u003c/span\u003e\u003c/p\u003e\u003cp\u003e\u003cspan style=\"background-color: transparent;\"\u003e\u003ci\u003e\u003ca target=\"_blank\" rel=\"nofollow\" href=\"https://victim-site.com/_next/image?url=https://attacker.com\"\u003ehttps://victim-site.com/_next/image?url=https://attacker.com\u003c/a\u003e\u003c/i\u003e\u003c/span\u003e\u003c/p\u003e\u003cp\u003e\u003cspan style=\"background-color: transparent;\"\u003eIn this example, attacker-controlled content from attacker.com is served through the victim site\u2019s domain (victim-site.com), violating the same-origin policy and potentially misleading users or other services.\u003c/span\u003e\u003c/p\u003e\u003cb\u003e\u003cp\u003e\u003cspan style=\"background-color: transparent;\"\u003e\u003cbr\u003e\u003c/span\u003e\u003c/p\u003e\u003cp\u003e\u003cspan style=\"background-color: transparent;\"\u003eImpact:\u003c/span\u003e\u003c/p\u003e\u003c/b\u003e\u003cul\u003e\u003cli\u003e\u003cp\u003e\u003cspan style=\"background-color: transparent;\"\u003eSSRF via unrestricted remote URL loading\u003c/span\u003e\u003c/p\u003e\u003c/li\u003e\u003c/ul\u003e\u003cul\u003e\u003cli\u003e\u003cp\u003e\u003cspan style=\"background-color: transparent;\"\u003eArbitrary remote content loading\u003c/span\u003e\u003c/p\u003e\u003c/li\u003e\u003c/ul\u003e\u003cul\u003e\u003cli\u003e\u003cp\u003e\u003cspan style=\"background-color: transparent;\"\u003ePotential internal service exposure or phishing risks through domain abuse\u003c/span\u003e\u003c/p\u003e\u003c/li\u003e\u003c/ul\u003e\u003cb\u003e\u003cp\u003e\u003cbr\u003e\u003c/p\u003e\u003cp\u003e\u003cspan style=\"background-color: transparent;\"\u003eMitigation:\u003c/span\u003e\u003c/p\u003e\u003c/b\u003e\u003cp\u003e\u003cspan style=\"background-color: transparent;\"\u003eThe following mitigations have been put in place:\u003c/span\u003e\u003c/p\u003e\u003cul\u003e\u003cli\u003e\u003cp\u003e\u003cspan style=\"background-color: transparent;\"\u003eServer side updates to Cloudflare\u2019s platform to restrict the content loaded via the\u0026nbsp;\u003c/span\u003e\u003cspan style=\"background-color: transparent;\"\u003e/_next/image\u0026nbsp;\u003c/span\u003e\u003cspan style=\"background-color: transparent;\"\u003eendpoint 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\u003c/span\u003e\u003c/p\u003e\u003c/li\u003e\u003c/ul\u003e\u003cul\u003e\u003cli\u003e\u003cp\u003e\u003ca target=\"_blank\" rel=\"nofollow\" href=\"https://github.com/opennextjs/opennextjs-cloudflare/pull/727\"\u003e\u003cspan style=\"background-color: transparent;\"\u003eRoot cause fix\u003c/span\u003e\u003c/a\u003e\u0026nbsp;\u003cspan style=\"background-color: transparent;\"\u003eto the Cloudflare adapter for Open Next. The patched version of the adapter is found here\u0026nbsp;\u003c/span\u003e\u003ca target=\"_blank\" rel=\"nofollow\" href=\"https://www.npmjs.com/package/@opennextjs/cloudflare/v/1.3.0\"\u003e\u003cspan style=\"background-color: transparent;\"\u003e@opennextjs/cloudflare@1.3.0\u003c/span\u003e\u003c/a\u003e\u003c/p\u003e\u003c/li\u003e\u003cli\u003e\u003cp\u003e\u003ca target=\"_blank\" rel=\"nofollow\" href=\"https://github.com/cloudflare/workers-sdk/pull/9608\"\u003e\u003cspan style=\"background-color: transparent;\"\u003ePackage dependency update\u003c/span\u003e\u003c/a\u003e\u0026nbsp;\u003cspan style=\"background-color: transparent;\"\u003eto create-cloudflare (c3) to use the fixed version of the Cloudflare adapter for Open Next. The patched version of create-cloudflare is found here:\u0026nbsp;\u003c/span\u003e\u003ca target=\"_blank\" rel=\"nofollow\" href=\"https://www.npmjs.com/package/create-cloudflare/v/2.49.3\"\u003e\u003cspan style=\"background-color: transparent;\"\u003ecreate-cloudflare@2.49.3\u003c/span\u003e\u003c/a\u003e\u003c/p\u003e\u003c/li\u003e\u003c/ul\u003e\u003cspan style=\"background-color: transparent;\"\u003eIn addition to the automatic mitigation deployed on Cloudflare\u2019s platform, we encourage affected users to upgrade to @opennext/cloudflare v1.3.0 and use the \u003c/span\u003e\u003ca target=\"_blank\" rel=\"nofollow\" href=\"https://nextjs.org/docs/pages/api-reference/components/image#remotepatterns\"\u003e\u003cspan style=\"background-color: transparent;\"\u003eremotePatterns \u003c/span\u003e\u003c/a\u003e\u003ca target=\"_blank\" rel=\"nofollow\" href=\"https://nextjs.org/docs/pages/api-reference/components/image#remotepatterns\"\u003e\u003cspan style=\"background-color: transparent;\"\u003efilter in Next config\u003c/span\u003e\u003c/a\u003e\u003cspan style=\"background-color: transparent;\"\u003e if they need to allow-list external urls with images assets.\u003c/span\u003e\u003cbr\u003e"
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