CVE-2026-80229
Discovered by AISLEPUBLISHEDCWE-416
Description
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.
CVSS Base Scores
CVSS v3.1(Primary)
3.1CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:L
Affected Products
| Vendor | Product | Version | Status |
|---|---|---|---|
| curl | curl | 8.14.0 | affected |
| curl | curl | 8.15.0 | affected |
| curl | curl | 8.17.0 | affected |
| curl | curl | 8.21.0 | affected |
| curl | curl | f2ce6c46b9dcc46ced0ce43fa95176ea7599a854 | affected |
| curl | curl | 8.21.0 | affected |
| curl | curl | 8.20.0 | affected |
| curl | curl | 8.19.0 | affected |
| curl | curl | 8.18.0 | affected |
| curl | curl | 8.17.0 | affected |
| curl | curl | 8.16.0 | affected |
| curl | curl | 8.15.0 | affected |
| curl | curl | 8.14.1 | affected |
| curl | curl | 8.14.0 | affected |
Credits
- Stanislav Fort (Aisle Research)(finder)
- Daniel Stenberg(remediation developer)