CVE-2026-80229High· 7.5▾ TwilightWhen performing transfers via libcurl’s multi interface, pooled TLS connections can outlive their originating easy handles. In OpenSSL 3 provider configurations, libcurl attaches an allocated library context to the easy handle's state an…
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 41.3 · likelihood 0.1 · exploitation 0
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Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake.
Exploit-prediction probability, daily snapshots since Sep 7.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
0.2%
— → 7.5
none → high
7.5 → —
high → none
— → 7.5
none → high
0.2% → 0.9%
Last analysed / modified upstream
When performing transfers via libcurl’s multi interface, pooled TLS connections can outlive their originating easy handles. In OpenSSL 3 provider configurations, libcurl attaches an allocated library context to the easy handle's state and passes it to OpenSSL without acquiring an ownership reference; destroying the easy handle prematurely frees this context while the active connection retains a dangling pointer, leading to a heap-use-after-free upon subsequent I/O or post-handshake operations.
curl >= 8.14.0, < 8.22.0Upgrade past the affected range:
curl 8.22.0Field changes observed since this record was first indexed.
Connected by shared product, vendor, weakness, or advisory.
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