A deeply nested multipart MIME structure constructed via the public API causes a stack overflow in libcurl during normal cleanup operations. An excessive recursion depth within `curl_mime_free` leads to unbounded stack frame allocation during structure traversal, ultimately crashing the host process.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Redhat_linux | — | No solution exists | Oct 19, 2026 | Oct 14, 2026 |
| Ubuntu | — | Upgrade libcurl4 (Ubuntu Pro)Upgrade libcurl4Upgrade libcurl4-nss-dev (Ubuntu Pro)Upgrade libcurl4-gnutls-dev (Ubuntu Pro)Upgrade libcurl4-gnutls-devUpgrade libcurl4-openssl-dev (Ubuntu Pro)Upgrade libcurl3-nssUpgrade libcurl3-gnutlsUpgrade libcurl3-nss (Ubuntu Pro)Upgrade libcurl3-gnutls (Ubuntu Pro)Upgrade curl (Ubuntu Pro)Upgrade libcurl3 (Ubuntu Pro)Upgrade curlUpgrade libcurl4-nss-devUpgrade libcurl4t64Upgrade libcurl4-openssl-devUpgrade libcurl3t64-gnutls | Oct 14, 2026 | Oct 14, 2026 |
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