CVE-2025-6087Network attack vector

Unauthenticated SSRF via unrestricted image URL fetching

Published Jun 16, 2025 · Updated Jun 16, 2025

SSRF in OpenNext for Cloudflare before 1.3.0 allows remote attackers to proxy arbitrary remote content through /_next/image. The Worker template passes the endpoint's unvalidated url parameter directly to fetch(), without enforcing Next.js remotePatterns. Exploitation requires a reachable deployment without effective edge filtering and enables victim-origin content proxying or requests to internal services.

CVSS severity7.8
High
EPSS probability0.93%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

SSRF in OpenNext for Cloudflare before 1.3.0 allows remote attackers to proxy arbitrary remote content through /_next/image. The Worker template passes the endpoint's unvalidated url parameter directly to fetch(), without enforcing Next.js remotePatterns. Exploitation requires a reachable deployment without effective edge filtering and enables victim-origin content proxying or requests to internal services.

The record

CVE
CVE-2025-6087
Published
Jun 16, 2025
Updated
Jun 16, 2025
Vendor
OpenNext
Product
OpenNext for Cloudflare
Classifications
CWE-918, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 16, 2025CVE publishedPublication date reported by the CVE source.
  2. Jun 16, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <1.3.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

OpenNext · OpenNext for Cloudflareversion=0 <1.3.0

Published CVSS scores

9.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
7.8Cloudflare, Inc.CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:H/SI:L/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-918Server-Side Request Forgery (SSRF)
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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