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CVE-2026-86409

🗓️ 16 Oct 2026 18:23:32Reported by redhat.comType 
redhatcve
 redhatcve
🔗 access.redhat.com👁 10 Views

curl fails to clear AWS SigV4 authentication on reused handles, leading to information disclosure.

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Refs
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alpinelinux
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stale SigV4 headers sent unintended
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cvelist
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CVE-2026-86409 stale SigV4 headers sent unintended
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debiancve
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hackerone
Hacker One
curl: CVE-2026-86409: stale SigV4 headers sent unintended
27 Aug 202609:03
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mend
Mend
CVE-2026-86409
14 Oct 202609:57
–mend
mageia
Mageia
Updated curl package fixes security vulnerabilities
17 Oct 202603:21
–mageia
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17 Oct 2026 03:56Current
5.8Medium risk
Vulners AI Score5.8
CVSS 3.15.3
10