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Vulnerability record · CVE-2019-6690 · published 21 March 2019

CVE-2019-6690: Python-gnupg improper input validation vulnerability

Python · Python Gnupg

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.

7.5 CVSS 3.1 High EPSS 8.5% · top 5.1% CWE-20 · Improper input validation
7.5CVSS 3.1 base score, v2 5.0
8.5%EPSS exploitation probability, 30 days
NoNot in CISA KEV
5Affected product versions listed by NVD
26References
17 Jun 2026Last modified by NVD

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.

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

Affected products

5 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://lists.opensuse.org/opensuse-security-announce/2019-02/msg00008.html Mailing ListThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-02/msg00058.html Mailing ListThird Party Advisory
http://packetstormsecurity.com/files/151341/Python-GnuPG-0.4.3-Improper-Input-Validation.html Third Party AdvisoryVDB Entry
http://www.securityfocus.com/bid/106756 Broken Link
https://blog.hackeriet.no/cve-2019-6690-python-gnupg-vulnerability/ Third Party Advisory
https://lists.debian.org/debian-lts-announce/2019/02/msg00021.html Mailing ListThird Party Advisory
https://lists.debian.org/debian-lts-announce/2021/12/msg00027.html Mailing ListThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3WMV6XNPPL3VB3RQRFFOBCJ
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/W6KYZMN2PWXY4ENZVJUVTGF
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/X4VFRUG56542LTYK4444TPJ
https://pypi.org/project/python-gnupg/#history ProductThird Party Advisory
https://seclists.org/bugtraq/2019/Jan/41 Mailing ListThird Party Advisory
https://usn.ubuntu.com/3964-1/ Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-02/msg00008.html Mailing ListThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-02/msg00058.html Mailing ListThird Party Advisory
http://packetstormsecurity.com/files/151341/Python-GnuPG-0.4.3-Improper-Input-Validation.html Third Party AdvisoryVDB Entry
http://www.securityfocus.com/bid/106756 Broken Link
https://blog.hackeriet.no/cve-2019-6690-python-gnupg-vulnerability/ Third Party Advisory
https://lists.debian.org/debian-lts-announce/2019/02/msg00021.html Mailing ListThird Party Advisory
https://lists.debian.org/debian-lts-announce/2021/12/msg00027.html Mailing ListThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3WMV6XNPPL3VB3RQRFFOBCJ
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/W6KYZMN2PWXY4ENZVJUVTGF
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/X4VFRUG56542LTYK4444TPJ
https://pypi.org/project/python-gnupg/#history ProductThird Party Advisory
https://seclists.org/bugtraq/2019/Jan/41 Mailing ListThird Party Advisory
https://usn.ubuntu.com/3964-1/ Third Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2019-6690), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.