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.
- Haxx Curl
- < 8.20.0
- CVSS 3.1
- 6.5 MEDIUM
- EPSS
- 0.3% (24th percentile)
- NVD status
- Analyzed
- Published
- 2026-07-03
No indexed exploits for CVE-2026-8458 yet
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No exploit for CVE-2026-8458 has been indexed yet. Our index is built from live traffic and upstream syncs, so this page can only say what it knows — not that no exploit exists.