OS Command Injection in intake (CVE-2026-33310)
Summary
OS command injection in intake (CVE-2026-33310). Successful exploitation can lead to full system takeover.
Original description
The description as published by the source.
Summary
The shell() syntax within parameter default values appears to be automatically expanded during the catalog parsing process.
If a catalog contains a parameter default such as shell(), the command may be executed when the catalog source is accessed.
This means that if a user loads a malicious catalog YAML, embedded commands could execute on the host system.
This behavior could potentially be classified as OS Command Injection / Unsafe Shell Expansion.
Details
The issue appears to originate from how parameter default values are expanded when a catalog source is accessed.
During catalog loading and source access:
Intake resolves parameter default values
The function responsible for expanding defaults processes the shell() syntax
The shell expression triggers a subprocess execution
Because this occurs during catalog evaluation, the command may execute before the user explicitly interacts with the dataset itself.
Affected logic appears to involve:
expand_defaults()
and related parameter parsing mechanisms.
PoC
exploit.yaml
metadata:
version: 1
sources:
rce_test:
driver: csv
description: "Testing shell expansion in parameters"
args:
urlpath: "{{ cmd_exec }}"
parameters:
cmd_exec:
display_name: "Test Parameter"
type: str
default: "shell(touch /tmp/intake_rce_test)"
reproduce.py
import intake
import os
PROOF_FILE = "/tmp/intake_rce_test"
if os.path.exists(PROOF_FILE):
os.remove(…
Source: OSV.dev (Open Source Vulnerabilities) NVD GitHub Advisory OSV
Auto-generated summary
Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.
A vulnerability tracked as CVE-2026-33310 has been found in intake.
Successful exploitation can lead to full system takeover.
What to do: apply the vendor's official patched release.
If unsure, ask your IT team or search "intake CVE-2026-33310" on the vendor's site.
CVE-2026-33310 (intake) — CWE-78
Attack vector: remote (network-reachable) / unauthenticated
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.
OS command injection (CWE-78) exists in intake.
Check the vendor advisory for the affected versions of intake.
Severity: ?. Successful exploitation can lead to full system takeover.
Update to the patched release per vendor advisory.
Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.
Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Run grep -r 'intake' . against your dependency files (package-lock.json, requirements.txt, go.sum) to find affected services.
Response actions
Concrete steps and command examples for SOC/SRE teams to execute in order
-
1Identify exposure identify
grep -r 'intake' . | grep -v node_modulesリポジトリと本番環境の依存ファイル (package-lock.json / requirements.txt / go.sum / Gemfile.lock 等) で
intakeを grep し、稼働しているサービス・バージョンを把握する。 -
2Post-deployment verification verify
Confirm patched version is live in productionパッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。
Affected packages
References
- advisory nvd.nist.gov
- package github.com
- web github.com
- web github.com