Vulnerability details
CVE-2026-92388
curl curl
FTP wildcard write callback mixup
CVSS 3.1
9.1Critical
Official description
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.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 9.1Critical | 3.1 | CISA ADP / Vulnrichment (CISA-ADP) | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| curl | curl | 7.21.0 ≤ v ≤ 7.21.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.21.1 ≤ v ≤ 7.21.1 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.21.2 ≤ v ≤ 7.21.2 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.21.3 ≤ v ≤ 7.21.3 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.21.4 ≤ v ≤ 7.21.4 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.21.5 ≤ v ≤ 7.21.5 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.21.6 ≤ v ≤ 7.21.6 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.21.7 ≤ v ≤ 7.21.7 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.22.0 ≤ v ≤ 7.22.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.23.0 ≤ v ≤ 7.23.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.23.1 ≤ v ≤ 7.23.1 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.24.0 ≤ v ≤ 7.24.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.25.0 ≤ v ≤ 7.25.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.26.0 ≤ v ≤ 7.26.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.27.0 ≤ v ≤ 7.27.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.28.0 ≤ v ≤ 7.28.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.28.1 ≤ v ≤ 7.28.1 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.29.0 ≤ v ≤ 7.29.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.30.0 ≤ v ≤ 7.30.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.31.0 ≤ v ≤ 7.31.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.32.0 ≤ v ≤ 7.32.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.33.0 ≤ v ≤ 7.33.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.34.0 ≤ v ≤ 7.34.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.35.0 ≤ v ≤ 7.35.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.36.0 ≤ v ≤ 7.36.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.37.0 ≤ v ≤ 7.37.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.37.1 ≤ v ≤ 7.37.1 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.38.0 ≤ v ≤ 7.38.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.39.0 ≤ v ≤ 7.39.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.40.0 ≤ v ≤ 7.40.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.41.0 ≤ v ≤ 7.41.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.42.0 ≤ v ≤ 7.42.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.42.1 ≤ v ≤ 7.42.1 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.43.0 ≤ v ≤ 7.43.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.44.0 ≤ v ≤ 7.44.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.45.0 ≤ v ≤ 7.45.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.46.0 ≤ v ≤ 7.46.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.47.0 ≤ v ≤ 7.47.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.47.1 ≤ v ≤ 7.47.1 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.48.0 ≤ v ≤ 7.48.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.49.0 ≤ v ≤ 7.49.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.49.1 ≤ v ≤ 7.49.1 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.50.0 ≤ v ≤ 7.50.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.50.1 ≤ v ≤ 7.50.1 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.50.2 ≤ v ≤ 7.50.2 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.50.3 ≤ v ≤ 7.50.3 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.51.0 ≤ v ≤ 7.51.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.52.0 ≤ v ≤ 7.52.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.52.1 ≤ v ≤ 7.52.1 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.53.0 ≤ v ≤ 7.53.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.53.1 ≤ v ≤ 7.53.1 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.54.0 ≤ v ≤ 7.54.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.54.1 ≤ v ≤ 7.54.1 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.55.0 ≤ v ≤ 7.55.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.55.1 ≤ v ≤ 7.55.1 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.56.0 ≤ v ≤ 7.56.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.56.1 ≤ v ≤ 7.56.1 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.57.0 ≤ v ≤ 7.57.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.58.0 ≤ v ≤ 7.58.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.59.0 ≤ v ≤ 7.59.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.60.0 ≤ v ≤ 7.60.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.61.0 ≤ v ≤ 7.61.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.61.1 ≤ v ≤ 7.61.1 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.62.0 ≤ v ≤ 7.62.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.63.0 ≤ v ≤ 7.63.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.64.0 ≤ v ≤ 7.64.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.64.1 ≤ v ≤ 7.64.1 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.65.0 ≤ v ≤ 7.65.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.65.1 ≤ v ≤ 7.65.1 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.65.2 ≤ v ≤ 7.65.2 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.65.3 ≤ v ≤ 7.65.3 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.66.0 ≤ v ≤ 7.66.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.67.0 ≤ v ≤ 7.67.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.68.0 ≤ v ≤ 7.68.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.69.0 ≤ v ≤ 7.69.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.69.1 ≤ v ≤ 7.69.1 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.70.0 ≤ v ≤ 7.70.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.71.0 ≤ v ≤ 7.71.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.71.1 ≤ v ≤ 7.71.1 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.72.0 ≤ v ≤ 7.72.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.73.0 ≤ v ≤ 7.73.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.74.0 ≤ v ≤ 7.74.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.75.0 ≤ v ≤ 7.75.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.76.0 ≤ v ≤ 7.76.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.76.1 ≤ v ≤ 7.76.1 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.77.0 ≤ v ≤ 7.77.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.78.0 ≤ v ≤ 7.78.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.79.0 ≤ v ≤ 7.79.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.79.1 ≤ v ≤ 7.79.1 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.80.0 ≤ v ≤ 7.80.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.81.0 ≤ v ≤ 7.81.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.82.0 ≤ v ≤ 7.82.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.83.0 ≤ v ≤ 7.83.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.83.1 ≤ v ≤ 7.83.1 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.84.0 ≤ v ≤ 7.84.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.85.0 ≤ v ≤ 7.85.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.86.0 ≤ v ≤ 7.86.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.87.0 ≤ v ≤ 7.87.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.88.0 ≤ v ≤ 7.88.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.88.1 ≤ v ≤ 7.88.1 | CVEProject cvelistV5 (CNA) |
| curl | curl | 8.0.0 ≤ v ≤ 8.0.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 8.0.1 ≤ v ≤ 8.0.1 | CVEProject cvelistV5 (CNA) |
| curl | curl | 8.1.0 ≤ v ≤ 8.1.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 8.1.1 ≤ v ≤ 8.1.1 | CVEProject cvelistV5 (CNA) |
| curl | curl | 8.1.2 ≤ v ≤ 8.1.2 | CVEProject cvelistV5 (CNA) |
| curl | curl | 8.10.0 ≤ v ≤ 8.10.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 8.10.1 ≤ v ≤ 8.10.1 | CVEProject cvelistV5 (CNA) |
| curl | curl | 8.11.0 ≤ v ≤ 8.11.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 8.11.1 ≤ v ≤ 8.11.1 | CVEProject cvelistV5 (CNA) |
| curl | curl | 8.12.0 ≤ v ≤ 8.12.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 8.12.1 ≤ v ≤ 8.12.1 | CVEProject cvelistV5 (CNA) |
| curl | curl | 8.13.0 ≤ v ≤ 8.13.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 8.14.0 ≤ v ≤ 8.14.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 8.14.1 ≤ v ≤ 8.14.1 | CVEProject cvelistV5 (CNA) |
| curl | curl | 8.15.0 ≤ v ≤ 8.15.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 8.16.0 ≤ v ≤ 8.16.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 8.17.0 ≤ v ≤ 8.17.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 8.18.0 ≤ v ≤ 8.18.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 8.19.0 ≤ v ≤ 8.19.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 8.2.0 ≤ v ≤ 8.2.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 8.2.1 ≤ v ≤ 8.2.1 | CVEProject cvelistV5 (CNA) |
| curl | curl | 8.20.0 ≤ v ≤ 8.20.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 8.21.0 ≤ v ≤ 8.21.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 8.22.0 ≤ v ≤ 8.22.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 8.3.0 ≤ v ≤ 8.3.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 8.4.0 ≤ v ≤ 8.4.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 8.5.0 ≤ v ≤ 8.5.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 8.6.0 ≤ v ≤ 8.6.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 8.7.0 ≤ v ≤ 8.7.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 8.7.1 ≤ v ≤ 8.7.1 | CVEProject cvelistV5 (CNA) |
| curl | curl | 8.8.0 ≤ v ≤ 8.8.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 8.9.0 ≤ v ≤ 8.9.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 8.9.1 ≤ v ≤ 8.9.1 | CVEProject cvelistV5 (CNA) |
References and advisories
3
Kolun on Telegram @kolunsec
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Details
- Published
- 2026-10-20
- Last updated
- 2026-10-30
- State
- Published
- Assigner (CNA)
- curl
- Kolun priority
- 27 · Low
Exploit prediction (EPSS)
0.69%
Probability of exploitation in 30 days
53.4%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- Yes
- Exploitation
- Proof of concept
- Technical impact
- Partial
Weaknesses (CWE)
- CWE-416Use After Free