Vulnerability Description
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.
Related Weaknesses (CWE)
References
- http://github.com/avwo/whistle/releases/tag/v2.10.3
- https://github.com/avwo/whistle/commit/777bcf69bae2972aa7138a158c91619185653cf5
- https://github.com/avwo/whistle/security/advisories/GHSA-3vfr-4gwf-qxfp
- https://github.com/avwo/whistle/security/advisories/GHSA-3vfr-4gwf-qxfp
FAQ
What is CVE-2026-55629?
CVE-2026-55629 is a documented vulnerability. 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...
How severe is CVE-2026-55629?
CVSS scoring is not yet available for CVE-2026-55629. Check NVD for updates.
Is there a patch for CVE-2026-55629?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.