FKIE_CVE-2026-92388
Vulnerability from fkie_nvd - Published: 2026-10-20 21:17 - Updated: 2026-10-20 21:17
Severity
Summary
When an FTP wildcard `LIST` operation fails, libcurl omits the restoration
path meant for successful listings, leaving the write callback set to the
internal listing parser and the write callback data pointing directly to the
easy handle. Subsequent reuse of this handle triggers an immediate crash, and
cloning it via `curl_easy_duphandle()` copies this corrupted state into the
duplicate. If the original handle is subsequently freed, executing a transfer
on the cloned handle causes a heap use-after-free read against the dangling
handle reference; alternatively, reusing the original or cloned handle while
changing only `CURLOPT_WRITEDATA` (and omitting `CURLOPT_WRITEFUNCTION`)
results in type confusion, forcing the internal parser to interpret incoming
server response bytes into memory at the application-supplied write data
pointer.
References
Impacted products
| Vendor | Product | Version |
|---|
{
"affected": [
{
"affectedData": [
{
"defaultStatus": "unaffected",
"product": "curl",
"vendor": "curl",
"versions": [
{
"lessThanOrEqual": "8.22.0",
"status": "affected",
"version": "8.22.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "8.21.0",
"status": "affected",
"version": "8.21.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "8.20.0",
"status": "affected",
"version": "8.20.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "8.19.0",
"status": "affected",
"version": "8.19.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "8.18.0",
"status": "affected",
"version": "8.18.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "8.17.0",
"status": "affected",
"version": "8.17.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "8.16.0",
"status": "affected",
"version": "8.16.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "8.15.0",
"status": "affected",
"version": "8.15.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "8.14.1",
"status": "affected",
"version": "8.14.1",
"versionType": "semver"
},
{
"lessThanOrEqual": "8.14.0",
"status": "affected",
"version": "8.14.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "8.13.0",
"status": "affected",
"version": "8.13.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "8.12.1",
"status": "affected",
"version": "8.12.1",
"versionType": "semver"
},
{
"lessThanOrEqual": "8.12.0",
"status": "affected",
"version": "8.12.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "8.11.1",
"status": "affected",
"version": "8.11.1",
"versionType": "semver"
},
{
"lessThanOrEqual": "8.11.0",
"status": "affected",
"version": "8.11.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "8.10.1",
"status": "affected",
"version": "8.10.1",
"versionType": "semver"
},
{
"lessThanOrEqual": "8.10.0",
"status": "affected",
"version": "8.10.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "8.9.1",
"status": "affected",
"version": "8.9.1",
"versionType": "semver"
},
{
"lessThanOrEqual": "8.9.0",
"status": "affected",
"version": "8.9.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "8.8.0",
"status": "affected",
"version": "8.8.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "8.7.1",
"status": "affected",
"version": "8.7.1",
"versionType": "semver"
},
{
"lessThanOrEqual": "8.7.0",
"status": "affected",
"version": "8.7.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "8.6.0",
"status": "affected",
"version": "8.6.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "8.5.0",
"status": "affected",
"version": "8.5.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "8.4.0",
"status": "affected",
"version": "8.4.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "8.3.0",
"status": "affected",
"version": "8.3.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "8.2.1",
"status": "affected",
"version": "8.2.1",
"versionType": "semver"
},
{
"lessThanOrEqual": "8.2.0",
"status": "affected",
"version": "8.2.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "8.1.2",
"status": "affected",
"version": "8.1.2",
"versionType": "semver"
},
{
"lessThanOrEqual": "8.1.1",
"status": "affected",
"version": "8.1.1",
"versionType": "semver"
},
{
"lessThanOrEqual": "8.1.0",
"status": "affected",
"version": "8.1.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "8.0.1",
"status": "affected",
"version": "8.0.1",
"versionType": "semver"
},
{
"lessThanOrEqual": "8.0.0",
"status": "affected",
"version": "8.0.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.88.1",
"status": "affected",
"version": "7.88.1",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.88.0",
"status": "affected",
"version": "7.88.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.87.0",
"status": "affected",
"version": "7.87.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.86.0",
"status": "affected",
"version": "7.86.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.85.0",
"status": "affected",
"version": "7.85.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.84.0",
"status": "affected",
"version": "7.84.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.83.1",
"status": "affected",
"version": "7.83.1",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.83.0",
"status": "affected",
"version": "7.83.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.82.0",
"status": "affected",
"version": "7.82.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.81.0",
"status": "affected",
"version": "7.81.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.80.0",
"status": "affected",
"version": "7.80.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.79.1",
"status": "affected",
"version": "7.79.1",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.79.0",
"status": "affected",
"version": "7.79.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.78.0",
"status": "affected",
"version": "7.78.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.77.0",
"status": "affected",
"version": "7.77.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.76.1",
"status": "affected",
"version": "7.76.1",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.76.0",
"status": "affected",
"version": "7.76.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.75.0",
"status": "affected",
"version": "7.75.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.74.0",
"status": "affected",
"version": "7.74.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.73.0",
"status": "affected",
"version": "7.73.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.72.0",
"status": "affected",
"version": "7.72.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.71.1",
"status": "affected",
"version": "7.71.1",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.71.0",
"status": "affected",
"version": "7.71.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.70.0",
"status": "affected",
"version": "7.70.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.69.1",
"status": "affected",
"version": "7.69.1",
"versionType": "semver"
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{
"lessThanOrEqual": "7.69.0",
"status": "affected",
"version": "7.69.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.68.0",
"status": "affected",
"version": "7.68.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.67.0",
"status": "affected",
"version": "7.67.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.66.0",
"status": "affected",
"version": "7.66.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.65.3",
"status": "affected",
"version": "7.65.3",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.65.2",
"status": "affected",
"version": "7.65.2",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.65.1",
"status": "affected",
"version": "7.65.1",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.65.0",
"status": "affected",
"version": "7.65.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.64.1",
"status": "affected",
"version": "7.64.1",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.64.0",
"status": "affected",
"version": "7.64.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.63.0",
"status": "affected",
"version": "7.63.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.62.0",
"status": "affected",
"version": "7.62.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.61.1",
"status": "affected",
"version": "7.61.1",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.61.0",
"status": "affected",
"version": "7.61.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.60.0",
"status": "affected",
"version": "7.60.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.59.0",
"status": "affected",
"version": "7.59.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.58.0",
"status": "affected",
"version": "7.58.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.57.0",
"status": "affected",
"version": "7.57.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.56.1",
"status": "affected",
"version": "7.56.1",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.56.0",
"status": "affected",
"version": "7.56.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.55.1",
"status": "affected",
"version": "7.55.1",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.55.0",
"status": "affected",
"version": "7.55.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.54.1",
"status": "affected",
"version": "7.54.1",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.54.0",
"status": "affected",
"version": "7.54.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.53.1",
"status": "affected",
"version": "7.53.1",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.53.0",
"status": "affected",
"version": "7.53.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.52.1",
"status": "affected",
"version": "7.52.1",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.52.0",
"status": "affected",
"version": "7.52.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.51.0",
"status": "affected",
"version": "7.51.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.50.3",
"status": "affected",
"version": "7.50.3",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.50.2",
"status": "affected",
"version": "7.50.2",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.50.1",
"status": "affected",
"version": "7.50.1",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.50.0",
"status": "affected",
"version": "7.50.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.49.1",
"status": "affected",
"version": "7.49.1",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.49.0",
"status": "affected",
"version": "7.49.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.48.0",
"status": "affected",
"version": "7.48.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.47.1",
"status": "affected",
"version": "7.47.1",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.47.0",
"status": "affected",
"version": "7.47.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.46.0",
"status": "affected",
"version": "7.46.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.45.0",
"status": "affected",
"version": "7.45.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.44.0",
"status": "affected",
"version": "7.44.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.43.0",
"status": "affected",
"version": "7.43.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.42.1",
"status": "affected",
"version": "7.42.1",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.42.0",
"status": "affected",
"version": "7.42.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.41.0",
"status": "affected",
"version": "7.41.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.40.0",
"status": "affected",
"version": "7.40.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.39.0",
"status": "affected",
"version": "7.39.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.38.0",
"status": "affected",
"version": "7.38.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.37.1",
"status": "affected",
"version": "7.37.1",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.37.0",
"status": "affected",
"version": "7.37.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.36.0",
"status": "affected",
"version": "7.36.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.35.0",
"status": "affected",
"version": "7.35.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.34.0",
"status": "affected",
"version": "7.34.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.33.0",
"status": "affected",
"version": "7.33.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.32.0",
"status": "affected",
"version": "7.32.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.31.0",
"status": "affected",
"version": "7.31.0",
"versionType": "semver"
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{
"lessThanOrEqual": "7.30.0",
"status": "affected",
"version": "7.30.0",
"versionType": "semver"
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{
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"status": "affected",
"version": "7.29.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.28.1",
"status": "affected",
"version": "7.28.1",
"versionType": "semver"
},
{
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"status": "affected",
"version": "7.28.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.27.0",
"status": "affected",
"version": "7.27.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.26.0",
"status": "affected",
"version": "7.26.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.25.0",
"status": "affected",
"version": "7.25.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.24.0",
"status": "affected",
"version": "7.24.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.23.1",
"status": "affected",
"version": "7.23.1",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.23.0",
"status": "affected",
"version": "7.23.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.22.0",
"status": "affected",
"version": "7.22.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.21.7",
"status": "affected",
"version": "7.21.7",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.21.6",
"status": "affected",
"version": "7.21.6",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.21.5",
"status": "affected",
"version": "7.21.5",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.21.4",
"status": "affected",
"version": "7.21.4",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.21.3",
"status": "affected",
"version": "7.21.3",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.21.2",
"status": "affected",
"version": "7.21.2",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.21.1",
"status": "affected",
"version": "7.21.1",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.21.0",
"status": "affected",
"version": "7.21.0",
"versionType": "semver"
}
]
}
],
"source": "2499f714-1537-4658-8207-48ae4bb9eae9"
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "When an FTP wildcard `LIST` operation fails, libcurl omits the restoration\npath meant for successful listings, leaving the write callback set to the\ninternal listing parser and the write callback data pointing directly to the\neasy handle. Subsequent reuse of this handle triggers an immediate crash, and\ncloning it via `curl_easy_duphandle()` copies this corrupted state into the\nduplicate. If the original handle is subsequently freed, executing a transfer\non the cloned handle causes a heap use-after-free read against the dangling\nhandle reference; alternatively, reusing the original or cloned handle while\nchanging only `CURLOPT_WRITEDATA` (and omitting `CURLOPT_WRITEFUNCTION`)\nresults in type confusion, forcing the internal parser to interpret incoming\nserver response bytes into memory at the application-supplied write data\npointer."
}
],
"id": "CVE-2026-92388",
"lastModified": "2026-10-20T21:17:21.243",
"metrics": {},
"published": "2026-10-20T21:17:21.243",
"references": [
{
"source": "2499f714-1537-4658-8207-48ae4bb9eae9",
"url": "https://curl.se/docs/CVE-2026-92388.html"
},
{
"source": "2499f714-1537-4658-8207-48ae4bb9eae9",
"url": "https://curl.se/docs/CVE-2026-92388.json"
},
{
"source": "2499f714-1537-4658-8207-48ae4bb9eae9",
"url": "https://hackerone.com/reports/4022070"
}
],
"sourceIdentifier": "2499f714-1537-4658-8207-48ae4bb9eae9",
"vulnStatus": "Received"
}
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The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.