UBUNTU-CVE-2026-19931
Dashboard / Vulnerabilities / UBUNTU-CVE-2026-19931
Summary:
Details: A flaw in libcurl makes it wrongly reuse an HTTP connection setup for a given hostname using Negotiate authentication, when the initial request is done using empty credentials. This can make user B's request get sent over user A's previously authenticated connection.
References: https://ubuntu.com/security/CVE-2026-19931, https://www.cve.org/CVERecord?id=CVE-2026-19931, https://curl.se/docs/CVE-2026-19931.html, https://github.com/curl/curl/commit/7103a93b05bc69ea98ed9d
Affected packages
Package
Name: curl
Purl: pkg:deb/ubuntu/curl?arch=source&distro=esm-infra%2Ffocal
Affected ranges
Type: ECOSYSTEM
Events:
Introduced- 0
Fixed -None
Affected versions
7.65.3-1ubuntu3
7.65.3-1ubuntu4
Common Vulnerability Scoring System
Attack Vector
Network
Adjacent
Local
Physical
Privileges Required
None
Low
High
User Interaction
None
Required
Scope
Unchanged
Changed
Confidentiality
None
Low
High
Integrity
None
Low
High
Availability
None
Low
High
