HIGH
python-docx before 0.8.6 allows context-dependent attackers to conduct XML External Entity (XXE) attacks via a crafted document
Published Dec 21, 2016
8.7
HIGHCVSS 4.0
EPSS 2.35%
Description
python-docx before 0.8.6 allows context-dependent attackers to conduct XML External Entity (XXE) attacks via a crafted document.
Affected products
No data.
- ≤ 0.8.5
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
8.7 HIGH GHSA
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Attack Vector Network
Attack Complexity Low
Attack Requirements None
Privileges Required None
User Interaction Passive
Vulnerable System Confidentiality High
Vulnerable System Integrity High
Vulnerable System Availability High
Subsequent System Confidentiality None
Subsequent System Integrity None
Subsequent System Availability None
8.8 HIGH NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction Required
Scope Unchanged
Confidentiality Impact High
Integrity Impact High
Availability Impact High
No CVSS v3.0 score for this CVE.
6.8 MEDIUM NVD
AV:N/AC:M/Au:N/C:P/I:P/A:P
Access Vector Network
Access Complexity Medium
Authentication None
Confidentiality Impact Partial
Integrity Impact Partial
Availability Impact Partial
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
2.35% 0.02354
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 2, 2026.
EPSS probability 0.02354
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (13 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 2, 2026 | 2.35% (0.02354) | 83.13th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.35% (0.02354) | 81.45th | v5 (v2026.06.15) |
| Mar 30, 2025 | 0.90% (0.00899) | 73.55th | v4 (v2025.03.14) |
| Mar 29, 2025 | 2.12% (0.02121) | 73.57th | v4 (v2025.03.14) |
| Mar 17, 2025 | 0.91% (0.00910) | 74.18th | v4 (v2025.03.14) |
| Dec 12, 2024 | 1.22% (0.01220) | 85.96th | v3 (v2023.03.01) |
| Mar 20, 2024 | 0.60% (0.00601) | 77.99th | v3 (v2023.03.01) |
| Dec 8, 2023 | 0.60% (0.00601) | 75.99th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.56% (0.00555) | 74.12th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.11% (0.01108) | 55.18th | v2 (v2022.01.01) |
| Sep 17, 2022 | 1.11% (0.01108) | 53.57th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.11% (0.01108) | 51.54th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.11% (0.01108) | 29.61th | v2 (v2022.01.01) |
Weaknesses (1)
References (13)
- http://www.openwall.com/lists/oss-security/2016/06/28/7 mailing-listMailing ListPatchThird Party Advisory
- http://www.openwall.com/lists/oss-security/2016/06/28/8 mailing-listMailing ListThird Party Advisory
- http://www.securityfocus.com/bid/91485 vdb-entryThird Party AdvisoryVDB Entry
- https://github.com/advisories/GHSA-34wj-p5jm-2p96 Advisory
- https://github.com/pypa/advisory-database/tree/main/vulns/python-docx/PYSEC-2016-21.yaml
- https://github.com/python-openxml/python-docx/blob/v0.8.6/HISTORY.rst PatchRelease NotesVendor Advisory
- https://github.com/python-openxml/python-docx/commit/61b40b161b64173ab8e362aec1fd197948431beb
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6FFMOH7ZPOPQWNJGUZOS5LXX4MGNRXXT vendor-advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XU2WSYRNB7CLBBFCGSX34XHACTA2SWDZ vendor-advisory
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/6FFMOH7ZPOPQWNJGUZOS5LXX4MGNRXXT
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/XU2WSYRNB7CLBBFCGSX34XHACTA2SWDZ
- https://nvd.nist.gov/vuln/detail/CVE-2016-5851
- https://web.archive.org/web/20170214030949/http://www.securityfocus.com/bid/91485
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published Dec 21, 2016
Updated Aug 6, 2024
Reserved Jun 28, 2016
Link CVE-2016-5851
CISA Vulnrichment
GHSA-34WJ-P5JM-2P96 Updated n/a