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7.5 High

CVE-2026-92391 A deeply nested multipart MIME structure constructed via the public API causes a stack overflow in libcurl during normal…

Description

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.

Affected products and versions

Product Affected versions Fixed in
curl 8.22.0 No fix stated
curl 8.21.0 No fix stated
curl 8.20.0 No fix stated
curl 8.19.0 No fix stated
curl 8.18.0 No fix stated
curl 8.17.0 No fix stated
curl 8.16.0 No fix stated
curl 8.15.0 No fix stated
curl 8.14 8.14.0 → 8.14.1 No fix stated
Show the 47 other branches
Product Affected versions Fixed in
curl 8.13.0 No fix stated
curl 8.12 8.12.0 → 8.12.1 No fix stated
curl 8.11 8.11.0 → 8.11.1 No fix stated
curl 8.10 8.10.0 → 8.10.1 No fix stated
curl 8.9 8.9.0 → 8.9.1 No fix stated
curl 8.8.0 No fix stated
curl 8.7 8.7.0 → 8.7.1 No fix stated
curl 8.6.0 No fix stated
curl 8.5.0 No fix stated
curl 8.4.0 No fix stated
curl 8.3.0 No fix stated
curl 8.2 8.2.0 → 8.2.1 No fix stated
curl 8.1 8.1.0 → 8.1.2 No fix stated
curl 8.0 8.0.0 → 8.0.1 No fix stated
curl 7.88 7.88.0 → 7.88.1 No fix stated
curl 7.87.0 No fix stated
curl 7.86.0 No fix stated
curl 7.85.0 No fix stated
curl 7.84.0 No fix stated
curl 7.83 7.83.0 → 7.83.1 No fix stated
curl 7.82.0 No fix stated
curl 7.81.0 No fix stated
curl 7.80.0 No fix stated
curl 7.79 7.79.0 → 7.79.1 No fix stated
curl 7.78.0 No fix stated
curl 7.77.0 No fix stated
curl 7.76 7.76.0 → 7.76.1 No fix stated
curl 7.75.0 No fix stated
curl 7.74.0 No fix stated
curl 7.73.0 No fix stated
curl 7.72.0 No fix stated
curl 7.71 7.71.0 → 7.71.1 No fix stated
curl 7.70.0 No fix stated
curl 7.69 7.69.0 → 7.69.1 No fix stated
curl 7.68.0 No fix stated
curl 7.67.0 No fix stated
curl 7.66.0 No fix stated
curl 7.65 7.65.0 → 7.65.3 No fix stated
curl 7.64 7.64.0 → 7.64.1 No fix stated
curl 7.63.0 No fix stated
curl 7.62.0 No fix stated
curl 7.61 7.61.0 → 7.61.1 No fix stated
curl 7.60.0 No fix stated
curl 7.59.0 No fix stated
curl 7.58.0 No fix stated
curl 7.57.0 No fix stated
curl 7.56 7.56.0 → 7.56.1 No fix stated

References

Timeline

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