Ansible Module 'nexmo' leaks API credentials via query string
CVE-2026-11820 Published on June 23, 2026
Community.general: community.general nexmo — api credentials exposed in get url query string[security] community.general nexmo — api credentials exposed in get url query string
Module: plugins/modules/nexmo.py
CVSS 3.1: 6.5 MEDIUM AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Issue: api_key and api_secret are declared no_log=True at the input level, but both credentials are immediately URL-encoded into a GET request as query parameters, bypassing all no_log protection.
Vulnerable Code (lines 82-93):
msg = {
"api_key": module.params.get("api_key"),
"api_secret": module.params.get("api_secret"),
"from": module.params.get("src"),
"text": module.params.get("msg"),
}
url = f"{NEXMO_API}?{urlencode(msg)}"
response, info = fetch_url(module, url, headers=headers)
Observed Output:
https://rest.nexmo.com/sms/json?api_key=a1b2c3d4&api_secret=MyS3cr3tK3y!!&from=AnsibleBot&to=15551234567&text=Hello
Exposure Vectors:
Ansible verbose output (-vvv) logs the full request URL
Vonage/Nexmo server access logs record credentials in query string
HTTP proxies, SIEM, and network inspection tools capture the full URL
AWX/Automation Controller network debug logs
Fix: Switch to POST with credentials in the request body:
data = urlencode({"api_key": api_key, "api_secret": api_secret,
"from": src, "to": number, "text": msg})
fetch_url(module, NEXMO_API, data=data, method="POST",
headers={"Content-Type": "application/x-www-form-urlencoded"})
Vulnerability Analysis
CVE-2026-11820 is exploitable with network access, and requires small amount of user privileges. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have a high impact on confidentiality, with no impact on integrity and availability.
Timeline
Reported to Red Hat.
Made public.
Weakness Type
Insertion of Sensitive Information into Log File
Information written to log files can be of a sensitive nature and give valuable guidance to an attacker or expose sensitive user information.
Products Associated with CVE-2026-11820
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