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Vulnerability record · CVE-2023-7079 · published 29 December 2023

CVE-2023-7079: Cloudflare wrangler improper authentication vulnerability

Cloudflare · Wrangler

Sending specially crafted HTTP requests and inspector messages to Wrangler's dev server could result in any file on the user's computer being accessible over the local network. An attacker that could trick any user on the local network into opening a malicious website could also read any file.

5.7 CVSS 3.1 Medium EPSS 0.70% · top 48.8% CWE-287 · Improper authentication
5.7CVSS 3.1 base score
0.70%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
6References
17 Jun 2026Last modified by NVD

Description

Sending specially crafted HTTP requests and inspector messages to Wrangler's dev server could result in any file on the user's computer being accessible over the local network. An attacker that could trick any user on the local network into opening a malicious website could also read any file.

CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/cloudflare/workers-sdk/pull/4532 Patch
https://github.com/cloudflare/workers-sdk/pull/4535 Patch
https://github.com/cloudflare/workers-sdk/security/advisories/GHSA-cfph-4qqh-w828 PatchThird Party Advisory
https://github.com/cloudflare/workers-sdk/pull/4532 Patch
https://github.com/cloudflare/workers-sdk/pull/4535 Patch
https://github.com/cloudflare/workers-sdk/security/advisories/GHSA-cfph-4qqh-w828 PatchThird Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2023-7079), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.