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.

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Produits concernés

• curl
• Haxx curl

Scores CVSS

Faiblesses (CWE)

• CWE-488

Références

• https://curl.se/docs/CVE-2026-8458.html PatchVendor Advisory
• https://curl.se/docs/CVE-2026-8458.json Vendor Advisory
• https://hackerone.com/reports/3721183 ExploitIssue TrackingThird Party Advisory
• https://hackerone.com/reports/3721183 ExploitIssue TrackingThird Party Advisory

Ailleurs

• NVD
• CVE.org
• CIRCL Vulnerability-Lookup
• CERT-FR
• GitHub Advisories