CVE-2019-6690

Name: CVE-2019-6690
Creator: NVD / NIST
Published: 2019-03-21T16:01:09.077+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 8.55%

Last modified Jun 17, 2026

CVE-2019-6690 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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. EPSS estimates a 8.55% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

EPSS Probability

8.55%

94.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-20

Affected Software

Vendor	Product	Versions
Python	Python-Gnupg	0.4.3
Debian	Debian Linux	8.0
Debian	Debian Linux	9.0
Opensuse	Leap	15.0
Suse	Backports	All versions
Canonical	Ubuntu Linux	18.04
Canonical	Ubuntu Linux	18.10
Canonical	Ubuntu Linux	19.04

References

http://lists.opensuse.org/opensuse-security-announce/2019-02/msg00008.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-02/msg00058.htmlMailing List, Third Party Advisory
http://packetstormsecurity.com/files/151341/Python-GnuPG-0.4.3-Improper-Input-Validation.htmlThird Party Advisory, VDB Entry
http://www.securityfocus.com/bid/106756Broken Link
https://blog.hackeriet.no/cve-2019-6690-python-gnupg-vulnerability/Third Party Advisory
https://lists.debian.org/debian-lts-announce/2019/02/msg00021.htmlMailing List, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/12/msg00027.htmlMailing List, Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3WMV6XNPPL3VB3RQRFFOBCJ3AGWC4K47/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/W6KYZMN2PWXY4ENZVJUVTGFBVYEVY7II/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/X4VFRUG56542LTYK4444TPJBGR57MT25/
https://pypi.org/project/python-gnupg/#historyProduct, Third Party Advisory
https://seclists.org/bugtraq/2019/Jan/41Mailing List, Third Party Advisory
https://usn.ubuntu.com/3964-1/Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-02/msg00008.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-02/msg00058.htmlMailing List, Third Party Advisory
http://packetstormsecurity.com/files/151341/Python-GnuPG-0.4.3-Improper-Input-Validation.htmlThird Party Advisory, VDB Entry
http://www.securityfocus.com/bid/106756Broken Link
https://blog.hackeriet.no/cve-2019-6690-python-gnupg-vulnerability/Third Party Advisory
https://lists.debian.org/debian-lts-announce/2019/02/msg00021.htmlMailing List, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/12/msg00027.htmlMailing List, Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3WMV6XNPPL3VB3RQRFFOBCJ3AGWC4K47/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/W6KYZMN2PWXY4ENZVJUVTGFBVYEVY7II/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/X4VFRUG56542LTYK4444TPJBGR57MT25/
https://pypi.org/project/python-gnupg/#historyProduct, Third Party Advisory
https://seclists.org/bugtraq/2019/Jan/41Mailing List, Third Party Advisory
https://usn.ubuntu.com/3964-1/Third Party Advisory

Timeline

Published: Mar 21, 2019
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-6690?

How severe is CVE-2019-6690?

CVE-2019-6690 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 8.55% probability of exploitation in the next 30 days.

How do I fix CVE-2019-6690?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2019-6690?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST