---
id: CVE-2011-4076
aliases:
  - GHSA-vcmv-6rxx-fh7r
  - PYSEC-2026-691
title: OpenStack Nova Exposure of Sensitive Information to an Unauthorized Actor
summary: OpenStack Nova Exposure of Sensitive Information to an Unauthorized Actor
severity: medium
cvss: 5.9
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N'
vendor: nova
product: nova
ecosystem: pip
affected:
  - nova < 12.0.0a0
patched:
  - nova 12.0.0a0
published: '2022-04-22'
updated: '2026-07-06'
source: OSV
sourceUrl: 'https://osv.dev/vulnerability/GHSA-vcmv-6rxx-fh7r'
references:
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2011-4076'
  - url: >-
      https://github.com/openstack/nova/commit/b1ab6da1495784ff581000018a6047fd19cf82c4
  - url: >-
      https://github.com/openstack/nova/commit/beee11edbfdd82cd81bc9c0fd75912c167892c2b
  - url: 'https://access.redhat.com/security/cve/cve-2011-4076'
  - url: 'https://bugs.launchpad.net/nova/+bug/868360'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2011-4076'
  - url: 'https://security-tracker.debian.org/tracker/CVE-2011-4076'
  - url: 'https://www.openwall.com/lists/oss-security/2011/10/25/4'
tags:
  - osv
  - pip
epss: 0.01458
epssPercentile: 0.71968
ingestedAt: '2026-07-08T18:25:53.301Z'
---

## Overview

OpenStack Nova before 2012.1 allows someone with access to an EC2_ACCESS_KEY (equivalent to a username) to obtain the EC2_SECRET_KEY (equivalent to a password). Exposing the EC2_ACCESS_KEY via http or tools that allow man-in-the-middle over https could allow an attacker to easily obtain the EC2_SECRET_KEY. An attacker could also presumably brute force values for EC2_ACCESS_KEY.

## Affected packages

- `nova < 12.0.0a0`

## Remediation

Upgrade to a patched release:

- `nova 12.0.0a0`