Directory traversal vulnerability in Cloudflare Wrangler
Priority LOW 27CWE-22Published · Updated
Key facts
- Attack vector
- Adjacent network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-22 and the CVSS impact.
Summary
The Wrangler command line tool (<[email protected] or <[email protected]) 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.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00817 57th percentileScored 2026-11-07
Fix Fixed Wrangler (Cloudflare): 3.1.1, 2.20.1wrangler (npm): 2.20.1
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Cloudflare | Wrangler | 3 to before 3.1.1; 2 to before 2.20.1 | 3.1.1, 2.20.1 | Patch available | CNA |
| — | wrangler (npm) | before 2.20.1 | 2.20.1 | Patch available | GHSA-8c93-4hch-xgxp |
- Wrangler VendorCloudflare Affected 3 to before 3.1.1; 2 to before 2.20.1 Fixed in 3.1.1, 2.20.1 Patch available CNA
- wrangler (npm) Vendor— Affected before 2.20.1 Fixed in 2.20.1 Patch available GHSA-8c93-4hch-xgxp
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:cloudflare:wrangler:*:*:*:*:*:node.js:*:* | before 3.1.1 | Vulnerable | Cloudflare |
- cpe:2.3:a:cloudflare:wrangler:*:*:*:*:*:node.js:*:* Versions before 3.1.1 Vulnerable ·Cloudflare
Remediation
- Fix · CNA Wrangler (Cloudflare) Fixed in 3.1.1, 2.20.1
- Fix · GHSA-8c93-4hch-xgxp wrangler (npm) Fixed in 2.20.1 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2023-3348
- 2026-10-03 Alias added: GHSA-8c93-4hch-xgxp
References
Advisory 2
Other 6
- https://github.com/cloudflare/workers-sdk
- https://developers.cloudflare.com/workers/wrangler/
- 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/releases/tag/wrangler%403.1.1
More Cloudflare Wrangler vulnerabilities
- TI-2026-00705 OS Command Injection in `wrangler pages deploy` CVSS 4.0HIGH 7.7
- TI-2023-06476 Arbitrary remote code execution within wrangler dev Workers sandbox CVSS 3.1HIGH 8.5
- TI-2023-06475 Arbitrary remote file read in Wrangler dev server CVSS 3.1MEDIUM 6.4
Sources
- CVE-2023-3348 · CVE Program
- CVE-2023-3348 · NVD
- FIRST EPSS
- GHSA-8c93-4hch-xgxp · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences