Vulnerability details
CVE-2026-92387
curl curl
never-ending loop via server response omission
CVSS 3.1
8.1High
Official description
By permanently omitting the final control-response line, a malicious FTP, IMAP, POP3, or SMTP server can exploit libcurl and completely bypass its configured transfer timeout mechanism, indefinitely blocking all concurrent transfers bound to the same multi-handle.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 8.1High | 3.1 | CISA ADP / Vulnrichment (CISA-ADP) | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| 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 | 8.20.0 ≤ 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) |
References and advisories
3
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Details
- Published
- 2026-10-20
- Last updated
- 2026-10-29
- State
- Published
- Assigner (CNA)
- curl
Exploit prediction (EPSS)
1.04%
Probability of exploitation in 30 days
64.3%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- No
- Exploitation
- Proof of concept
- Technical impact
- Total
Weaknesses (CWE)
- CWE-835Loop with Unreachable Exit Condition ('Infinite Loop')