Cloudflare Wrangler directory traversal vulnerability
Impact
The Wrangler command line tool (<=wrangler@3.1.0 or <=wrangler@2.20.1) was affected by a directory traversal vulnerability when running a local development server for Pages (wrangler pages dev command). This vulnerability enabled an attacker in the same network as the victim to connect to the local development server and access the victim's files present outside of the directory for the development server.
Patches
Wrangler2: Upgrade to v2.20.1 or higher. Wrangler3: Upgrade to v3.1.1 or higher.
References
Affected software
Click a technology to see all vulnerabilities affecting it.
| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| npm package | wrangler | < 2.20.1 | 2.20.1 |
References
- https://github.com/cloudflare/workers-sdk/security/advisories/GHSA-8c93-4hch-xgxp
- https://nvd.nist.gov/vuln/detail/CVE-2023-3348
- https://github.com/cloudflare/workers-sdk/pull/3498
- https://github.com/cloudflare/workers-sdk/commit/fddffdf0c23d2ca56f2139a2c6bc278052594cba
- https://developers.cloudflare.com/workers/wrangler
- https://github.com/cloudflare/workers-sdk
- https://github.com/cloudflare/workers-sdk/releases/tag/wrangler%403.1.1
- CVSS vector
CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N- Weakness (CWE)
CWE-22- Platform
- npm
- Package
wrangler- Disclosed
- 03.08.2023
- Updated
- 11.10.2026 10:22
Sources and licenses
OSV / GitHub Advisory Database - GHSA-8c93-4hch-xgxp - CC BY 4.0
Vulnerability history: wrangler
All published vulnerabilities of this package (npm package), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 4
- First → latest
- 08.2023 01.2026
- Without a fix
- 0
- Exploited in attacks
- 0
Severity breakdown
- Critical 1
- High 1
- Medium 2
Disclosures per year
- 2023: 1
- 2024: 2
- 2025: 0
- 2026: 1
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