CVE-2026-32847

Description

DeepCode through commit c991dc2 contains a path traversal vulnerability in the SPA catch-all route in new_ui/backend/main.py that allows unauthenticated attackers to read arbitrary files by supplying percent-encoded path segments to the GET /{full_path:path} endpoint. Attackers can bypass Starlette's path normalization by encoding slashes as %2F and dots as %2E%2E, causing the joined path to traverse outside FRONTEND_DIST and exposing sensitive files such as SSH private keys, TLS certificates, and application secrets with a single HTTP request.

PUBLISHED Reserved 2026-03-16 | Published 2026-05-28 | Updated 2026-05-30 | Assigner VulnCheck

Problem types

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Product status

Credits

YU SUN finder

References

github.com/HKUDS/DeepCode/issues/126 exploit issue-tracking

www.vulncheck.com/...rsal-via-spa-catch-all-route-in-main-py third-party-advisory

cve.org (CVE-2026-32847)

nvd.nist.gov (CVE-2026-32847)

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