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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Observed memory leak in ssl library: Python 3.14 GC issue","articleBody":"# Bug report\n\n### Bug description:\n\nI already opened a bug on `urllib3` for this issue, it looks that may application using MSAL for Python library (which relies on `requests` , which relies on `urllib3`, which relies on `ssl`)  is leaking memory when being upgraded from Python 3.13 to Python 3.14 (I tested 3.14.{0, 1, 2})\n\nThe details are explained in the `urllib3` ticket including outputs from `memray` and it points to ssl package (precisely [`ssl.SSLContext.load_verify_locations`](https://docs.python.org/3/library/ssl.html#ssl.SSLContext.load_verify_locations)), see: https://github.com/urllib3/urllib3/issues/3738\n\n### CPython versions tested on:\n\n3.14\n\n### Operating systems tested on:\n\nLinux\n\n\u003c!-- gh-linked-prs --\u003e\n### Linked PRs\n* gh-143585\n* gh-143685\n\u003c!-- /gh-linked-prs --\u003e\n","author":{"url":"https://github.com/HenriBlacksmith","@type":"Person","name":"HenriBlacksmith"},"datePublished":"2025-12-10T14:43:47.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":38},"url":"https://github.com/142516/cpython/issues/142516"}