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CVE-2026-86409

🗓️ 14 Oct 2026 09:57:37Reported by MendType 
mend
 mend
🔗 www.mend.io👁 3 Views

Setting CURLOPT_AWS_SIGV4 to NULL in libcurl leaks state information via headers.

Related
ReporterTitlePublishedViews
Family
curl
curl security advisories
stale SigV4 headers sent unintended
14 Oct 202608:00
–curl
cve
CVE
CVE-2026-86409
14 Oct 202608:00
–cve
debiancve
Debian CVE
CVE-2026-86409
14 Oct 202608:00
–debiancve
hackerone
Hacker One
curl: CVE-2026-86409: stale SigV4 headers sent unintended
27 Aug 202609:03
–hackerone
osv-curl
osv-curl
CURL-CVE-2026-86409 stale SigV4 headers sent unintended
14 Oct 202608:00
–osv-curl
osv-debian
osv-debian
DEBIAN-CVE-2026-86409
14 Oct 202607:47
–osv-debian
osv-echo
osv-echo
ECHO-B6FB-B123-10DB
14 Oct 202613:50
–osv-echo
ptsecurity
Positive Technologies
PT-2026-113738
14 Oct 202600:00
–ptsecurity
ubuntucve
UbuntuCve
CVE-2026-86409
14 Oct 202606:00
–ubuntucve
nessus
Tenable Nessus
Linux Distros Unpatched Vulnerability : CVE-2026-86409
14 Oct 202600:00
–nessus
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15 Oct 2026 18:50Current
5.7Medium risk
Vulners AI Score5.7
CVSS 3.13.7
CVSS 46.3
3