CVE-2026-80229
N/A
N/A
Summary
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.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| curl | curl | 8.21.0 <= 8.21.0 | affected |
| curl | curl | 8.20.0 <= 8.20.0 | affected |
| curl | curl | 8.19.0 <= 8.19.0 | affected |
| curl | curl | 8.18.0 <= 8.18.0 | affected |
| curl | curl | 8.17.0 <= 8.17.0 | affected |
| curl | curl | 8.16.0 <= 8.16.0 | affected |
| curl | curl | 8.15.0 <= 8.15.0 | affected |
| curl | curl | 8.14.1 <= 8.14.1 | affected |
| curl | curl | 8.14.0 <= 8.14.0 | affected |
Weaknesses
- CWE-416 Use After Free
References
- https://curl.se/docs/CVE-2026-80229.json
- https://curl.se/docs/CVE-2026-80229.html
- https://hackerone.com/reports/3969255
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