An issue was discovered in pip (all versions) because it installs the version with the highest version number, even if the user had intended to obtain a private package from a private index. This only affects use of the --extra-index-url option, and exploitation requires that the package does not already exist in the public index (and thus the attacker can put the package there with an arbitrary version number). NOTE: it has been reported that this is intended functionality and the user is responsible for using --extra-index-url securely

🗓️ 02 Oct 2025 06:11:01Reported by MicrosoftType

Pip uses the highest version for private extra index URLs, enabling tampering if the package is not on the public index.

Reporter	Title	Published	Views	Family All 50
IBM Security Bulletins	Security Bulletin: Vulnerabilities exists in IBM Netezza Analytics - NPS Product	15 Jul 202515:44	–	ibm
IBM Security Bulletins	Security Bulletin: WML CE: pip (all versions) because it installs the version with the highest version number, even if the user had intended to obtain a private package from a private index	17 Jul 202016:48	–	ibm
IBM Security Bulletins	Security Bulletin: Pip as used by IBM QRadar Advisor With Watson is vulnerable to multiple vulnerabilities (CVE-2019-20916, CVE-2021-3572, CVE-2018-20225)	15 Jun 202219:07	–	ibm
IBM Security Bulletins	Security Bulletin: IBM watsonx.data integration has several vulnerabilities due to open source packages (CVE-2018-20225, CVE-2025-6985, CVE-2025-54368)	20 Mar 202616:39	–	ibm
IBM Security Bulletins	Security Bulletin: IBM Watson Discovery for IBM Cloud Pak for Data affected by vulnerability in Python	19 Jun 202005:08	–	ibm
IBM Security Bulletins	Security Bulletin: IBM Maximo Application Suite - There is a vulnerability in Python used by IBM Maximo Manage application in IBM Maximo Application Suite (CVE-2018-20225, CVE-2019-20916, CVE-2023-43804, CVE-2023-4807)	9 Sep 202407:08	–	ibm
IBM Security Bulletins	Security Bulletin: An issue was discovered in pip (all versions) because it installs the version with the highest version number, which affects IBM watsonx.data	25 Jul 202512:31	–	ibm
IBM Security Bulletins	Security Bulletin: Several vulnerabilities affect Watson Machine Learning Accelerator on Cloud Pak for Data 5.0.0	29 Apr 202502:33	–	ibm
CBLMariner	CVE-2018-20225 affecting package python-pip 19.2-2	12 Jan 202509:15	–	cbl_mariner
Circl	CVE-2018-20225	8 May 202023:06	–	circl