libcurl might in some circumstances reuse the wrong connection when asked to do Negotiate-authenticated ones, even when they are set to use… (CVE-2026-8458)
libcurl might in some circumstances reuse the wrong connection when asked to do Negotiate-authenticated ones, even when they are set to use different "services". libcurl features a pool of recent connections so that subsequent requests can reuse an existing connection to avoid overhead. When reusing a connection a range of criteria must be met. Due to a logical error in the code, a request that was issued by an application could wrongfully reuse an existing connection to the same server that was authenticated using different services.
libcurl might in some circumstances reuse the wrong connection when asked to do Negotiate-authenticated ones, even when they are set to use… (CVE-2026-8458)
Description
libcurl might in some circumstances reuse the wrong connection when asked to do Negotiate-authenticated ones, even when they are set to use different "services". libcurl features a pool of recent connections so that subsequent requests can reuse an existing connection to avoid overhead. When reusing a connection a range of criteria must be met. Due to a logical error in the code, a request that was issued by an application could wrongfully reuse an existing connection to the same server that was authenticated using different services.
CVSS v3.1
Score 6.5medium
Affected software
pkg:deb/ubuntu/curl?arch=source&distro=esm-infra/bionicpkg:deb/ubuntu/curl?arch=source&distro=esm-infra/focalpkg:deb/ubuntu/curl?arch=source&distro=jammypkg:deb/ubuntu/curl?arch=source&distro=noblepkg:deb/ubuntu/curl?arch=source&distro=questingpkg:deb/ubuntu/curl?arch=source&distro=resoluteRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-88c6-6jfq-mm4q
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-8458"]
- Cvss Version
- 3.1
Threat ID: 6a483cb527e9c79719d820e1
Added to database: 07/03/2026, 22:50:29 UTC
Last enriched: 07/03/2026, 23:03:32 UTC
Last updated: 10/02/2026, 14:46:12 UTC
Views: 195
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