The XML libraries for Python 3.4, 3.3, 3.2, 3.1, 2.7, and 2.6, as used in OpenStack Keystone Essex and Folsom, Django, and possibly other products allow remote attackers to read arbitrary files via an XML external entity declaration in conjunction with an entity reference, aka an XML External Entity (XXE) attack.
CVE-2013-1665
This CVE was only ever scored under CVSS v2.0. NVD CVSS v2.0 base 5.0 — v2 rates that MEDIUM (v2 bands: LOW 0.0–3.9 / MEDIUM 4.0–6.9 / HIGH 7.0–10.0; v2 has no CRITICAL band). Vector AV:N/AC:L/Au:N/C:P/I:N/A:N. CVSS v2 is an older, coarser metric than v3.1/v4.0 (no Scope, no User Interaction, no Attack Requirements), so it is not directly comparable to a v3 or v4 score. NVD has never re-scored this record under v3. EPSS predicts 4.6% exploitation probability in the next 30 days, which is reflected in EG Risk but does not lift the v2 base. Confidence: LOW.
- Lower severity and no public exploit yet
A fix is available — apply it.
- CVSS v2.0 (legacy)
- 5.0MEDIUMNVD never assigned a CVSS v3 rating to this CVE
- EG Score
- 5.0(low)
- EG Risk
- 29(Track)EG Risk 29/100SSVC: Track
EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).
How it’s computedSeverity50% × 45%Exploitation5% × 40%Automatability30% × 15%Action: Routine — remediate on your standard cadence. - EPSS PROB
- 5%
- EPSS %ILE
- 91%
- KEV
- Not listed
Published
April 3, 2013
Last Modified
April 29, 2026
References (22)
- cve@mitrehttp://blog.python.org/2013/02/announcing-defusedxml-fixes-for-xml.html
- cve@mitrehttp://bugs.python.org/issue17239
- cve@mitrehttp://lists.openstack.org/pipermail/openstack-announce/2013-February/000078.html
- cve@mitrehttp://rhn.redhat.com/errata/RHSA-2013-0657.html
- cve@mitrehttp://rhn.redhat.com/errata/RHSA-2013-0658.html
- cve@mitrehttp://rhn.redhat.com/errata/RHSA-2013-0670.html
- cve@mitrehttp://ubuntu.com/usn/usn-1757-1
- cve@mitrehttp://www.debian.org/security/2013/dsa-2634
- cve@mitrehttp://www.openwall.com/lists/oss-security/2013/02/19/2
- cve@mitrehttp://www.openwall.com/lists/oss-security/2013/02/19/4
- cve@mitrehttps://bugs.launchpad.net/keystone/+bug/1100279
- af854a3a-2127-422b-91ae-364da2661108http://blog.python.org/2013/02/announcing-defusedxml-fixes-for-xml.html
- af854a3a-2127-422b-91ae-364da2661108http://bugs.python.org/issue17239
- af854a3a-2127-422b-91ae-364da2661108http://lists.openstack.org/pipermail/openstack-announce/2013-February/000078.html
- af854a3a-2127-422b-91ae-364da2661108http://rhn.redhat.com/errata/RHSA-2013-0657.html
Patch Availability(6)
| Vendor / Ecosystem | Fixed in / Patch | Released | Source |
|---|---|---|---|
| ubuntu | python-keystone (2012.2.1-0ubuntu1.2) @ quantal | 2026-05-29 | ubuntu |
| ubuntu | python-django (1.4.1-2ubuntu0.3) @ quantal | 2026-05-29 | ubuntu |
| redhat | openstack-nova-0:2012.2.3-4.el6ost | 2013-03-21 | redhat |
| redhat | openstack-cinder-0:2012.2.3-4.el6ost | 2013-03-21 | redhat |
| redhat | Django14-0:1.4.4-1.el6ost | 2013-03-21 | redhat |
| redhat | openstack-keystone-0:2012.2.3-3.el6ost | 2013-03-05 | redhat |
Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.
Affected Packages
(1 across 1 ecosystem)
PyPI(1)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| django | 1.3 ... 1.4.3 (10 versions) | 1.4.4 | — |
All Vendor Advisories
(6)
Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.
- Red HatRHSA-2013:0596MODERATE2013-02-19
RHSA-2013:0596 — Moderate
- Red HatRHSA-2013:0657MODERATE2013-02-19
RHSA-2013:0657 — Moderate
- Red HatRHSA-2013:0658MODERATE2013-02-19
RHSA-2013:0658 — Moderate
- Red HatRHSA-2013:0670MODERATE2013-02-19
RHSA-2013:0670 — Moderate
- UbuntuUSN-1730-1MEDIUM
OpenStack Keystone vulnerabilities
- UbuntuUSN-1757-1MEDIUM
Django vulnerabilities
Data Freshness Timeline
(refreshed 12× in last 7d / 38× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
- 2026-07-26 13:47 UTCEG score recompute▲ 5.00
- 2026-07-25 14:12 UTCEPSS rescore
- 2026-07-23 14:14 UTCEPSS rescore
- 2026-07-23 01:09 UTCEG score recompute
- 2026-07-23 00:12 UTCEG score recompute
- 2026-07-22 21:51 UTCEG score recompute
- 2026-07-22 14:04 UTCEPSS rescore
- 2026-07-22 14:04 UTCEPSS rescore
- 2026-07-22 13:18 UTCOSV refresh
- 2026-07-21 15:21 UTCEPSS rescore
- 2026-07-20 17:03 UTCEPSS rescore
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- 2026-07-19 14:27 UTCEPSS rescore
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- 2026-07-13 22:26 UTCEPSS rescore
- 2026-07-13 06:08 UTCEPSS rescore
- 2026-07-11 08:23 UTCEPSS rescore
- 2026-07-09 19:05 UTCEPSS rescore
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- 2026-07-08 15:10 UTCEPSS rescore
- 2026-07-06 02:19 UTCEPSS rescore
- 2026-07-06 02:19 UTCEPSS rescore
- 2026-07-05 08:59 UTCOSV refresh
- 2026-07-05 02:26 UTCEPSS rescore
- 2026-07-04 06:27 UTCEPSS rescore
- 2026-07-01 15:02 UTCEPSS rescore
- 2026-06-30 23:19 UTCEPSS rescore
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- 2026-06-29 14:02 UTCEPSS rescore
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- 2026-06-28 04:53 UTCEPSS rescore
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- 2026-06-25 13:46 UTCEPSS rescore
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- 2026-06-21 14:53 UTCEPSS rescore
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- 2026-06-19 19:23 UTCEPSS rescore
- 2026-06-19 19:22 UTCEPSS rescore
- 2026-06-18 17:49 UTCEPSS rescore
- 2026-06-18 17:49 UTCEPSS rescore
- 2026-06-17 17:49 UTCEPSS rescore
- 2026-06-17 17:49 UTCEPSS rescore
- 2026-06-16 20:05 UTCOSV refresh
- 2026-06-16 17:49 UTCEPSS rescore
- 2026-06-16 17:49 UTCEPSS rescore
- 2026-06-15 17:44 UTCEPSS rescore
- 2026-06-14 23:14 UTCEPSS rescore
- 2026-06-13 22:57 UTCEPSS rescore
- 2026-06-12 23:08 UTCEPSS rescore
- 2026-06-11 13:56 UTCEPSS rescore
- 2026-06-10 13:18 UTCEPSS rescore
- 2026-06-08 14:14 UTCEPSS rescore
- 2026-06-07 15:22 UTCEPSS rescore
- 2026-06-06 13:45 UTCEPSS rescore
- 2026-06-06 13:45 UTCEPSS rescore
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- 2026-06-02 20:10 UTCEPSS rescore
- 2026-06-02 20:10 UTCEPSS rescore
- 2026-06-01 13:49 UTCEPSS rescore
- 2026-06-01 13:49 UTCEPSS rescore
- 2026-05-31 00:14 UTCEPSS rescore
- 2026-05-31 00:14 UTCEPSS rescore
- 2026-05-29 13:41 UTCEPSS rescore
- 2026-05-29 13:41 UTCEPSS rescore
- 2026-05-29 00:25 UTCEG score recompute
- 2026-05-29 00:25 UTCVendor advisory
- 2026-05-28 13:42 UTCEPSS rescore
- 2026-05-28 13:42 UTCEPSS rescore
- 2026-05-28 13:42 UTCEPSS rescore
- 2026-05-27 13:38 UTCEPSS rescore
- 2026-05-27 13:38 UTCEPSS rescore
- 2026-05-26 07:16 UTCEPSS rescore
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- 2026-05-24 16:43 UTCEPSS rescore
- 2026-05-22 21:15 UTCEPSS rescore
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- 2026-05-21 22:39 UTCEPSS rescore
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- 2026-05-18 21:29 UTCEPSS rescore
- 2026-05-18 21:29 UTCEPSS rescore
Frequently asked(4)
What is CVE-2013-1665?
When was CVE-2013-1665 disclosed?
Is CVE-2013-1665 actively exploited?
How do I remediate CVE-2013-1665?
Dependency Blast Radius
See which npm, PyPI, Go, and Maven packages are affected by CVE-2013-1665
Is Your Infrastructure Affected by CVE-2013-1665?
EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.