How severe is CVE-2023-7078?

CVE-2023-7078 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over an adjacent network with high attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability none.

Is CVE-2023-7078 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (42nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-7078?

CVE-2023-7078 affects Cloudflare Miniflare. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-7078?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2023-7078 published?

CVE-2023-7078 was published on 2023-12-29 and last updated on 2026-06-17.

CVE-2023-7078

CVE-2023-7078 is a high-severity vulnerability in Cloudflare Miniflare with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-918.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 1% (42nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-918
Affected product: Cloudflare Miniflare
Published: 2023-12-29
Last modified: 2026-06-17

Description

Sending specially crafted HTTP requests to Miniflare's server could result in arbitrary HTTP and WebSocket requests being sent from the server. If Miniflare was configured to listen on external network interfaces (as was the default in wrangler until 3.19.0), an attacker on the local network could access other local servers.

Frequently asked questions

What is CVE-2023-7078?: Sending specially crafted HTTP requests to Miniflare's server could result in arbitrary HTTP and WebSocket requests being sent from the server. If Miniflare was configured to listen on external network interfaces (as was the default in wrangler until 3.19.0), an attacker on the local network could access other local servers.
How severe is CVE-2023-7078?: CVE-2023-7078 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over an adjacent network with high attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability none.
Is CVE-2023-7078 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (42nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-7078?: CVE-2023-7078 affects Cloudflare Miniflare. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-7078?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2023-7078 published?: CVE-2023-7078 was published on 2023-12-29 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:cloudflare:miniflare:*:*:*:*:*:node.js:*:*

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