high8.7
CVE-2026-55629
Whistle is an HTTP, HTTP2, HTTPS, and WebSocket debugging proxy.
Impact
Whistle is an HTTP, HTTP2, HTTPS, and WebSocket debugging proxy. Prior to 2.10.3, lib/service/service.js handles GET /cgi-bin/temp/get by reading req.query.filename, joining it to TEMP_FILES_PATH only when it matches the temporary file pattern, and otherwise passing the user-supplied filename directly to getFile, allowing a remote attacker to read arbitrary files such as /etc/passwd. This issue is reported as fixed in version 2.10.3.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| npm | whistle | < 2.10.3 | 2.10.3 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/advisories/GHSA-3vfr-4gwf-qxfp
- https://github.com/avwo/whistle/security/advisories/GHSA-3vfr-4gwf-qxfp
- https://nvd.nist.gov/vuln/detail/CVE-2026-55629
- https://github.com/avwo/whistle/commit/777bcf69bae2972aa7138a158c91619185653cf5
- http://github.com/avwo/whistle/releases/tag/v2.10.3