python-gnupg 0.4.3 allows context-dependent attackers to trick gnupg to decrypt other ciphertext than intended. To perform the attack, the passphrase to gnupg must be controlled by the adversary and the ciphertext should be trusted. Related to a "CWE-20: Improper Input Validation" issue affecting the affect functionality component.
CVE-2019-6690
This high-severity CVE scores 7.5 under NVD CVSS v3. EPSS exploit probability: 8.5% (94th percentile of EPSS-scored CVEs). GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
- High severity, but no confirmed exploitation yet
A fix is available — apply it.
- CVSS v3
- 7.5
- EG Score
- 7.5HIGHmedium confidence
- EG Risk
- 54EG Risk 54/100CISA SSVC
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 computedSeverity75% × 45%Exploitation40% × 40%Automatability30% × 15%CISA SSVC: Track at low or medium mission impact; Track* or Attend at high (mission-essential systems).Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high. - EPSS PROB
- 8.5%
- EPSS %ILE
- 94th
- KEV
- Not listed
CISA SSVCTrack at low or medium mission impact; Track* or Attend at high (mission-essential systems).
A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
Exploitation public PoC (EG-KEV: elevated) · Automatable unknown (not published for this CVE) · Technical impact partial (CVSS below 9.0). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table
Published
March 21, 2019
Last Modified
November 21, 2024
References (26)
- cve@mitrehttp://lists.opensuse.org/opensuse-security-announce/2019-02/msg00008.html
- cve@mitrehttp://lists.opensuse.org/opensuse-security-announce/2019-02/msg00058.html
- cve@mitrehttp://packetstormsecurity.com/files/151341/Python-GnuPG-0.4.3-Improper-Input-Validation.html
- cve@mitrehttp://www.securityfocus.com/bid/106756
- cve@mitrehttps://blog.hackeriet.no/cve-2019-6690-python-gnupg-vulnerability/
- cve@mitrehttps://lists.debian.org/debian-lts-announce/2019/02/msg00021.html
- cve@mitrehttps://lists.debian.org/debian-lts-announce/2021/12/msg00027.html
- cve@mitrehttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3WMV6XNPPL3VB3RQRFFOBCJ3AGWC4K47/
- cve@mitrehttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/W6KYZMN2PWXY4ENZVJUVTGFBVYEVY7II/
- cve@mitrehttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/X4VFRUG56542LTYK4444TPJBGR57MT25/
- cve@mitrehttps://pypi.org/project/python-gnupg/#history
- cve@mitrehttps://seclists.org/bugtraq/2019/Jan/41
- cve@mitrehttps://usn.ubuntu.com/3964-1/
- af854a3a-2127-422b-91ae-364da2661108http://lists.opensuse.org/opensuse-security-announce/2019-02/msg00008.html
- af854a3a-2127-422b-91ae-364da2661108http://lists.opensuse.org/opensuse-security-announce/2019-02/msg00058.html
Patch Availability(2)
| Vendor / Ecosystem | Fix (by version range) / Patch | Released | Source |
|---|---|---|---|
| ubuntu | python3-gnupg (0.4.3-1ubuntu1.19.04.1) @ disco | 2026-05-27 | ubuntu |
| ubuntu | python-gnupg (0.3.8-2ubuntu0.1~esm1) @ xenial | 2026-05-27 | ubuntu |
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
(7 across 7 ecosystems)
Debian:11(1)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| python-gnupg | — |
| — |
Debian:12(1)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| python-gnupg | — |
| — |
Debian:13(1)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| python-gnupg | — |
| — |
Debian:14(1)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| python-gnupg | — |
| — |
Debian:8(1)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| python-gnupg | 0.3.6-1 |
| — |
Debian:9(1)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| python-gnupg | 0.3.9-1 |
| — |
PyPI(1)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| python-gnupg | 0.2.3 ... 0.4.3 (20 versions) |
| — |
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
All Vendor Advisories
(2)
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.
Data Freshness Timeline
(refreshed 4× in last 7d / 25× 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.
Showing the most recent 100 of 150 total refreshes for this CVE.
- 2026-10-05 17:39 UTCEPSS rescore
- 2026-10-03 14:22 UTCEPSS rescore
- 2026-09-30 14:59 UTCEPSS rescore
- 2026-09-30 10:27 UTCEG score recompute
- 2026-09-28 13:46 UTCEPSS rescore
- 2026-09-28 11:38 UTCOSV refresh
- 2026-09-27 13:40 UTCEPSS rescore
- 2026-09-26 15:54 UTCEPSS rescore
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- 2026-09-08 21:55 UTCEPSS rescore
- 2026-09-08 15:04 UTCOSV refresh
- 2026-09-07 15:57 UTCEPSS rescore
- 2026-09-06 13:44 UTCEPSS rescore
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- 2026-09-05 15:24 UTCEPSS rescore
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- 2026-08-22 01:11 UTCOSV refresh
- 2026-08-19 17:00 UTCEPSS rescore
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- 2026-08-06 05:54 UTCOSV refresh
- 2026-08-05 19:13 UTCEPSS rescore
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- 2026-07-23 01:46 UTCEG score recompute
- 2026-07-22 22:28 UTCEG score recompute
- 2026-07-22 14:05 UTCEPSS rescore
- 2026-07-21 15:22 UTCEPSS rescore
- 2026-07-21 15:22 UTCEPSS rescore
- 2026-07-20 20:02 UTCOSV refresh
- 2026-07-20 17:04 UTCEPSS rescore
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- 2026-07-15 01:57 UTCEPSS rescore
- 2026-07-13 22:27 UTCEPSS rescore
- 2026-07-13 22:27 UTCEPSS rescore
- 2026-07-12 05:44 UTCEPSS rescore
- 2026-07-12 05:43 UTCEPSS rescore
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- 2026-07-09 19:06 UTCEPSS rescore
- 2026-07-08 15:11 UTCEPSS rescore
- 2026-07-07 13:43 UTCEPSS rescore
- 2026-07-06 16:25 UTCEPSS rescore
- 2026-07-06 16:25 UTCEPSS rescore
- 2026-07-06 02:20 UTCEPSS rescore
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- 2026-07-05 02:27 UTCEPSS rescore
- 2026-07-04 06:28 UTCEPSS rescore
- 2026-07-03 15:26 UTCOSV refresh
- 2026-07-01 15:03 UTCEPSS rescore
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- 2026-06-24 14:03 UTCEPSS rescore
- 2026-06-24 14:03 UTCEPSS rescore
Publicly available exploits
(1 reference)Working exploit code is in the public domain (1 GitHub PoC). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.
- GitHub PoCbrianwrf/CVE-2019-6690First seen Apr 3, 2019
It is a simple PoC of Improper Input Validation in python-gnupg 0.4.3 (CVE-2019-6690).
Open source ↗
Related CVEs(same product + same vendor + same CWE)
Same product
5 shownDebian:11:python-gnupg · Debian:9:python-gnupg
Frequently asked(5)
What is CVE-2019-6690?
When was CVE-2019-6690 disclosed?
Is CVE-2019-6690 actively exploited?
What is the CVSS score of CVE-2019-6690?
How do I remediate CVE-2019-6690?
Dependency Blast Radius
See which npm, PyPI, Go, and Maven packages are affected by CVE-2019-6690
Is Your Infrastructure Affected by CVE-2019-6690?
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