CVE-2026-3125: A Server-Side Request Forgery (SSRF) vulnerability was identified in the @opennextjs/cloudflare package, resul

Routine

MEDIUM 6.5REMOTEUPGRADE

CVE-2026-3125 is a medium-severity flaw (CVSS 6.5) affecting opennext for cloudflare. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A Server-Side Request Forgery (SSRF) vulnerability was identified in the @opennextjs/cloudflare package, resulting from a path normalization bypass in the /cdn-cgi/image/ handler.The @opennextjs/cloudflare worker template includes a /cdn-cgi/image/ handler intended for development use only. In production, Cloudflare's edge intercepts /cdn-cgi/image/ requests before they reach the Worker. However, by substituting a backslash for a forward slash (/

Why this priority

Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	6.5 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.4% (top 68%)
CISA exploited list	No
Weakness	CWE-706, CWE-918
Published	2026-03-04
Last modified	2026-06-17

Publisher (CNA): Cloudflare, Inc. · Vendor: opennextjs

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-03-04 19:16 UTCPublished CVE record published
2026-06-17 10:43 UTCUpdated Record last modified

opennextjs opennext for cloudflare UPGRADE

Affected: < 1.17.1

Fixed in: 1.17.1

Safe to downgrade to: no unaffected older release

1. Check installed version

npm ls opennext-for-cloudflare

2. UPGRADE to 1.17.1

npm install opennext-for-cloudflare@">=1.17.1"

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-3125?

opennext for cloudflare: upgrade to 1.17.1. Exact commands for each OS are on this page.

Is CVE-2026-3125 being exploited?

CVE-2026-3125 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-3125 affect?

CVE-2026-3125 affects opennext for cloudflare. Severity is medium (CVSS 6.5). A Server-Side Request Forgery (SSRF) vulnerability was identified in the @opennextjs/cloudflare package, resulting from a path normalization bypass in the /cdn-cgi/image/ handler.The @opennextjs/cloudflare worker template includes a /cdn-cg

How urgent is CVE-2026-3125?

Priority 36/100. Remotely exploitable, no login, no user action

Software pages

Cloudflare vulnerabilities

Related CVEs

CVE-2025-6087 CRITICAL 9.1 UPGRADE UPGRADE A Server-Side Request Forgery (SSRF) vulnerability was identified in the @opennextjs/cloudflare package

References

← Back to latest CVEs