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CVE-2026-86409 stale SigV4 headers sent unintended

🗓️ 20 Oct 2026 19:57:01Reported by curlType 
cvelist
 cvelist🔗 www.cve.org👁 5 Views

libcurl leaks SigV4 headers on subsequent transfers when CURLOPT_AWS_SIGV4 is NULL.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
alpinelinux
AlpineLinux		CVE-2026-86409
20 Oct 202619:57
–alpinelinux
circl
Circl		CVE-2026-86409
20 Oct 202620:01
–circl
curl
curl security advisories		stale SigV4 headers sent unintended
14 Oct 202608:00
–curl
cve
CVE		CVE-2026-86409
20 Oct 202619:57
–cve
debiancve
Debian CVE		CVE-2026-86409
20 Oct 202619:57
–debiancve
euvd
EUVD		EUVD-2026-105274
20 Oct 202619:57
–euvd
hackerone
Hacker One		curl: CVE-2026-86409: stale SigV4 headers sent unintended
27 Aug 202609:03
–hackerone
mend
Mend		CVE-2026-86409
14 Oct 202609:57
–mend
mageia
Mageia		Updated curl package fixes security vulnerabilities
17 Oct 202603:21
–mageia
nvd
NVD		CVE-2026-86409
20 Oct 202620:17
–nvd
Rows per page
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20 Oct 2026 19:57Current
libcurlSigV4information disclosureCURLOPT_AWS_SIGV4
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