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CVE-2026-19931 Negotiate ambient user conn reuse

🗓️ 06 Sep 2026 17:47:43Reported by curlType 
cvelist
 cvelist🔗 www.cve.org👁 7 Views

libcurl reuses Negotiate connection with empty credentials, mixing user sessions.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
alpinelinux
AlpineLinux		CVE-2026-19931
6 Sep 202617:47
–alpinelinux
circl
Circl		CVE-2026-19931
2 Sep 202612:35
–circl
curl
curl security advisories		Negotiate ambient user conn reuse
2 Sep 202608:00
–curl
nessus
Tenable Nessus		Curl 7.64.1 < 8.22.0 Negotiate Ambient User Connection Reuse
3 Sep 202600:00
–nessus
nessus
Tenable Nessus		libcurl 7.64.1 < 8.22.0 Negotiate Ambient User Connection Reuse
3 Sep 202600:00
–nessus
nessus
Tenable Nessus		Linux Distros Unpatched Vulnerability : CVE-2026-19931
2 Sep 202600:00
–nessus
cve
CVE		CVE-2026-19931
6 Sep 202617:47
–cve
debiancve
Debian CVE		CVE-2026-19931
2 Sep 202608:00
–debiancve
hackerone
Hacker One		curl: CVE-2026-19931: Negotiate ambient user conn reuse
7 Aug 202617:31
–hackerone
nvd
NVD		CVE-2026-19931
6 Sep 202618:17
–nvd
Rows per page
[
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]

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06 Sep 2026 17:47Current
libcurlNegotiate authenticationconnection reusecredential mixingempty credentials
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