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curl: One Strict-Transport-Security response header empties the victim's entire HSTS store, silently,

🗓️ 08 Sep 2026 20:29:11Reported by xshubhamrajType 
hackerone
 hackerone🔗 hackerone.com👁 3 Views

A Strict-Transport-Security header in curl empties the victim's on-disk HSTS store.

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15 Oct 2026 07:19Current
6.5Medium risk
Vulners AI Score6.5
CVSS 3.19.1
EPSS0.01987
SSVC
curlStrict-Transport-SecurityHSTSstorefile truncation
3