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CVE-2026-92391 is an uncontrolled-recursion vulnerability in libcurl's MIME cleanup handling. A deeply nested multipart MIME structure constructed through the public API causes curl_mime_free to recurse excessively while traversing and freeing the structure. The resulting stack exhaustion can crash the application hosting libcurl. The vulnerability affects curl versions before 8.23.0, subject to distribution-specific backported fixes.
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Referenced by an Ubuntu local security check covering curl packages. No individual technical description or vulnerability-specific exploit availability is provided.
Processing deeply nested MIME structures can trigger a stack overflow in curl, causing a crash and denial of service. The advisory identifies Ubuntu 18.04 LTS, 20.04 LTS, 22.04 LTS, and 24.04 LTS as affected.
A stack overflow vulnerability in libcurl's curl_mime_free cleanup function allows deeply nested multipart MIME structures to crash the host process, causing denial of service. The advisory rates it Medium with CVSS v3.1 5.5 (AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H), indicating local access and low privileges are required, with high availability impact and no confidentiality or integrity impact. Published October 19, 2026; fixes are listed as pending for the affected Amazon Linux releases.
A high-severity vulnerability affecting curl packages covered by the Echo security update. The listed CVSS v3 score is 7.5, indicating a network-accessible vulnerability requiring no privileges or user interaction, with high availability impact and no confidentiality or integrity impact. The content does not describe the underlying technical flaw.
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Cross-references every affected SKU, including bundled OEM variants.
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