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Servers and applications

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…

Severity
Medium 6.5
Published
3 Jul 2026
Last changed
15 Sept 2026
Added to UpHeron
21 Oct 2026
Fixed in
8.20.0
Sources
NVD

Affected software

SoftwareAffected versions
curlServers and applications · cpe:a:haxx:curl
  • From 7.46.0 before 8.20.0

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2026-8458
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2026-8458