CVE-2023-7078

SSRF via unauthenticated proxy request forwarding

Published Dec 29, 2023 · Updated Aug 26, 2024

SSRF in Cloudflare Miniflare 3.20230821.0 or later but before 3.20231030.2 allows remote attackers to send arbitrary HTTP and WebSocket requests. ProxyServer processed attacker-controlled operation and target headers without requiring MF-Op-Secret to match its private binding. Exposure requires listening on an external interface; an unauthenticated local-network attacker can then reach or modify services accessible from the host.

CVSS severity7.5
High
EPSS probability0.55%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

SSRF in Cloudflare Miniflare 3.20230821.0 or later but before 3.20231030.2 allows remote attackers to send arbitrary HTTP and WebSocket requests. ProxyServer processed attacker-controlled operation and target headers without requiring MF-Op-Secret to match its private binding. Exposure requires listening on an external interface; an unauthenticated local-network attacker can then reach or modify services accessible from the host.

The record

CVE
CVE-2023-7078
Published
Dec 29, 2023
Updated
Aug 26, 2024
Vendor
Cloudflare
Product
Miniflare
Classifications
CWE-918, T1190
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 29, 2023CVE publishedPublication date reported by the CVE source.
  2. Aug 26, 2024Record 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 <=<=3.20230821.0 changes=[{"at":"3.20231030.2","status":"unaffected"}]
  2. Affected versionversion=0 <3.20231030.2 changes=[{"at":"3.20231030.2","status":"unaffected"}]
  3. Affected versionversion=3.20230821.0 <3.20231030.2

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

Cloudflare · Miniflareversion=0 <=<=3.20230821.0 changes=[{"at":"3.20231030.2","status":"unaffected"}]; version=0 <3.20231030.2 changes=[{"at":"3.20231030.2","status":"unaffected"}]; version=3.20230821.0 <3.20231030.2

Published CVSS scores

7.5Cloudflare, Inc.CVSS:3.1/AV:A/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N
8.1NIST NVDCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A: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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectoradjacent
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.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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