CVE-2011-4596

Multiple directory traversal vulnerabilities in OpenStack Nova before 2011.3.1, when the EC2 API and the S3/RegisterImage image-registration method are enabled, allow remote authenticated users to overwrite arbitrary files via a crafted (1) tarball or (2) manifest.

Published: 2011-12-23 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2011-4596 is rated Moderate Risk (52.5/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 1.94%). EPSS rose +1.40% over the last day, indicating growing attacker interest. Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2011-4596

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.54% 1.94% +1.40%
2 2025-08-23 1.00% 0.54% -0.46%
3 2025-03-17 — 1.00% —

Full EPSS history (5 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2011-4596

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
6.0 2.0 MEDIUM
AV:N/AC:M/Au:S/C:P/I:P/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:S)
A single authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 6.8 6.4 [email protected]

Weakness enumeration for CVE-2011-4596

GitHub Security Advisory for CVE-2011-4596

GHSA-qr62-r9xc-r2gj · Severity: medium · Ecosystem: pip — OpenStack Nova Multiple directory traversal vulnerabilities

OS Trackers for CVE-2011-4596

vendor priority summary link
debian not yet assigned CVE-2011-4596 not yet assigned priority: Debian including 1 source packages (nova), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2011-4596
ubuntu medium CVE-2011-4596 medium priority: Ubuntu including 1 source packages (nova), 6 status rows across 6 suites (hardy, lucid, maverick, natty, oneiric, upstream): DNE 2, released 2, needs-triage 1, not-affected 1. https://ubuntu.com/security/CVE-2011-4596

Affected software / configurations for CVE-2011-4596

Vendor Product Version Raw CPE
openstack nova >= 2011.3, < 2011.3.1 cpe:2.3:a:openstack:nova:*:*:*:*:*:*:*:*

References for CVE-2011-4596

cvelogic Threat Intelligence