CVE-2026-0672: reject control characters in http.cookies cookie names, values, and parameters to prevent header injection
CVE-2026-3644: reject control characters in Morsel.update(), |= operator, and unpickling paths missed by CVE-2026-0672; add output validation to BaseCookie.js_output()
CVE-2026-2297: ensure SourcelessFileLoader uses io.open_code so sys.audit handlers fire for legacy .pyc imports
CVE-2025-8291: validate ZIP64 End of Central Directory locator offset to prevent ZIP archive parser confusion
CVE-2025-6069: fix quadratic complexity in html.parser.HTMLParser when processing crafted malformed inputs
CVE-2025-4516: fix use-after-free in unicode-escape decoder when an error handler is invoked
CVE-2025-1795: stop incorrectly RFC 2047 encoding the comma separator when an address list is folded