Vulnerability · Published Oct 16, 2026 · Assigned by GitHub_M

CVE-2026-108372LoopX serve-status permissive CORS policy exposes control-plane state and private Markdown files

High 7.1

In plain English

A high-severity security flaw in loopx from huangruiteng. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 23% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 4.0)7.1High

Exploit odds (30 days)0.3%top 76.7% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

Open and provider-neutral, LoopX is a lightweight state kernel and local-first control plane for loop engineering. From version 0.0.1 until 0.4.5, `loopx serve-status` in `loopx/status_server.py` uses `StatusRequestHandler._send_json()` and `do_OPTIONS()` to send `Access-Control-Allow-Origin: *` for unauthenticated responses on predictable loopback ports. A remote attacker can cause an operator who visits attacker-controlled web content to issue cross-origin requests to `GET /status.json`, `GET /review-material?goal_id=...&path=...`, `GET /`, and `POST /control-plane/configure-goal/dry-run`, exposing control-plane state, goal and run information, local absolute paths, private Markdown files below registered goal roots, and dry-run configuration projections. The affected routes do not provide cross-origin writes or arbitrary-file access. This issue is fixed in version 0.4.5.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
PyPI	loopx	0.4.5	GHSA-vx2m-gpq4-8j5q

Affected products (as reported)

Vendor	Product	Versions
huangruiteng	loopx	>= 0.0.1, < 0.4.5

Weakness: CWE-346, CWE-942 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

References

https://github.com/loopx-project/loopx/security/advisories/GHSA-vx2m-gpq4-8j5q x_refsource_CONFIRM
https://github.com/loopx-project/loopx/pull/3137 x_refsource_MISC
https://github.com/loopx-project/loopx/commit/838720fba42bd22f71b5bb763ec406f7bdf4c940 x_refsource_MISC
https://github.com/loopx-project/loopx/releases/tag/v0.4.5 x_refsource_MISC