Vulnerability · Published May 28, 2026 · Assigned by VulnCheck

CVE-2026-32847DeepCode 1.2.0 Path Traversal via SPA Catch-All Route in main.py

High 7.5

In plain English

A high-severity path traversal in DeepCode from HKUDS. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 32% of all known vulnerabilities).

Severity (CVSS 3.1)7.5High

Exploit odds (30 days)0.4%top 68.2% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official 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.

Affected products (as reported)

Vendor	Product	Versions
HKUDS	DeepCode	0 – through 1.2.00 – through c991dc22e67958a031f2e20595128a6a5fbd8f3d

Weakness: CWE-22 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

References

https://github.com/HKUDS/DeepCode/issues/126 issue-tracking
https://www.vulncheck.com/advisories/deepcode-path-traversal-via-spa-catch-all-route-in-main-py third-party-advisory