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Mail CVE debriefs

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MEDIUM Mail CVE published 2026-04-10

CVE-2026-1502

CVE-2026-1502 describes a CR/LF handling flaw where bytes were not rejected in HTTP client proxy tunnel headers or host values. In practical terms, that kind of validation gap can let attacker-controlled input alter outbound request formatting in proxy-related flows. The supplied references point to CPython fixes and a Python security announcement, while the NVD snapshot is still marked "Awaiting Analysis."