GHSA-j6xh-q826-55jw · Severity: medium · Ecosystem: pip — OpenStack Compute (Nova) vulnerable to denial of service via XML Entity Expansion attack
The security group extension in OpenStack Compute (Nova) Grizzly 2013.1.3, Havana before havana-3, and earlier allows remote attackers to cause a denial of service (resource consumption and crash) via an XML Entity Expansion (XEE) attack. NOTE: this issue is due to an incomplete fix for CVE-2013-1664.
Conclusion & alert: CVE-2013-4179 is rated High Exploit Risk (63.6/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 2.70%). Core evidence: 1 public exploit reference(s) are indexed (Exploit-DB). EPSS rose +2.04% over the last day, indicating growing attacker interest. Mandatory action: Public exploits are available—assess exposure, apply mitigations, and prioritize patching.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
| EDB-ID | Source | Kind | Published | Link |
|---|---|---|---|---|
| — | nvd_ref | exploit_tag | Exploit-DB ↗ |
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 | 0.66% | 2.70% | +2.04% |
| 2 | 2025-08-28 | 0.49% | 0.66% | +0.17% |
| 3 | 2025-04-03 | — | 0.49% | — |
Full EPSS history (11 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 4.3 | 2.0 | MEDIUM |
|
8.6 | 2.9 | [email protected] |
GHSA-j6xh-q826-55jw · Severity: medium · Ecosystem: pip — OpenStack Compute (Nova) vulnerable to denial of service via XML Entity Expansion attack
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
not yet assigned | CVE-2013-4179 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-2013-4179 |
redhat
|
medium | — | https://access.redhat.com/security/cve/CVE-2013-4179 |
ubuntu
|
medium | CVE-2013-4179 medium priority: Ubuntu including 1 source packages (nova), 6 status rows across 6 suites (lucid, precise, quantal, raring, saucy, upstream): not-affected 3, released 2, DNE 1. | https://ubuntu.com/security/CVE-2013-4179 |
| URL | Tags |
|---|---|
| http://rhn.redhat.com/errata/RHSA-2013-1199.html | Patch Vendor Advisory |
| http://www.ubuntu.com/usn/USN-2005-1 | |
| https://bugs.launchpad.net/ossa/+bug/1190229 | Exploit |