VULNERABILITY INTELLIGENCE

CVE-2026-8458

CVSS score6.5 MEDIUM
EPSS probability0.37%
CISA KEVNot currently listed
Published2026-07-03
Last modified2026-09-15
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

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.

Weakness classification

  • 2499f714-1537-4658-8207-48ae4bb9eae9: CWE-488
  • nvd@nist.gov: NVD-CWE-noinfo

Primary references