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curl: libcurl MQTT `CURLOPT_POSTFIELDSIZE_LARGE` overflow leads to immediate DoS

🗓️ 09 Nov 2025 05:51:21Reported by jiyongType 
hackerone
 hackerone
🔗 hackerone.com👁 11 Views

An attacker can crash libcurl mqtt clients by setting a huge postfieldsize large value, causing memory exhaustion.

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10 Nov 2025 15:00Current
7.1High risk
Vulners AI Score7.1
11