Vulnerability details
CVE-2026-8286
curl curl
wrong STARTTLS connection reuse
CVSS 3.1
8.1High
Official description
A vulnerability exists where a new transfer that uses STARTTLS to upgrade the connection might reuse an existing live connection even though the TLS configuration mismatches so it should not.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 8.1High | 3.1 | CISA ADP / Vulnrichment (CISA-ADP) | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| curl | curl | 7.30.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.31.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.32.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.33.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.34.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.35.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.36.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.37.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.37.1 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.38.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.39.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.40.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.41.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.42.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.42.1 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.43.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.44.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.45.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.46.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.47.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.47.1 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.48.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.49.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.49.1 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.50.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.50.1 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.50.2 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.50.3 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.51.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.52.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.52.1 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.53.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.53.1 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.54.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.54.1 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.55.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.55.1 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.56.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.56.1 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.57.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.58.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.59.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.60.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.61.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.61.1 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.62.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.63.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.64.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.64.1 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.65.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.65.1 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.65.2 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.65.3 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.66.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.67.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.68.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.69.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.69.1 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.70.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.71.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.71.1 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.72.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.73.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.74.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.75.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.76.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.76.1 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.77.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.78.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.79.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.79.1 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.80.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.81.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.82.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.83.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.83.1 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.84.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.85.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.86.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.87.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.88.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.88.1 | CVEProject cvelistV5 (CNA) |
| curl | curl | 8.0.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 8.0.1 | CVEProject cvelistV5 (CNA) |
| curl | curl | 8.1.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 8.1.1 | CVEProject cvelistV5 (CNA) |
| curl | curl | 8.1.2 | CVEProject cvelistV5 (CNA) |
| curl | curl | 8.10.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 8.10.1 | CVEProject cvelistV5 (CNA) |
| curl | curl | 8.11.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 8.11.1 | CVEProject cvelistV5 (CNA) |
| curl | curl | 8.12.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 8.12.1 | CVEProject cvelistV5 (CNA) |
| curl | curl | 8.13.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 8.14.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 8.14.1 | CVEProject cvelistV5 (CNA) |
| curl | curl | 8.15.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 8.16.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 8.17.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 8.18.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 8.19.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 8.2.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 8.2.1 | CVEProject cvelistV5 (CNA) |
| curl | curl | 8.20.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 8.3.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 8.4.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 8.5.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 8.6.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 8.7.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 8.7.1 | CVEProject cvelistV5 (CNA) |
| curl | curl | 8.8.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 8.9.0 | CVEProject cvelistV5 (CNA) |
| curl | curl | 8.9.1 | CVEProject cvelistV5 (CNA) |
| curl | curl | 7.30.0 ≤ v < 8.14.2 | CVEProject cvelistV5 (CNA) |
| curl | curl | 8.15.0 ≤ v < 8.16.1 | CVEProject cvelistV5 (CNA) |
| curl | curl | 8.17.0 ≤ v < 8.20.1 | CVEProject cvelistV5 (CNA) |
| curl | curl | a1701eea289fe7ea80651f801cf992838a491dde ≤ v < a86efdd7ca5433de9231e650f18247de8319ad16 | CVEProject cvelistV5 (CNA) |
References and advisories
3
Kolun on Telegram @kolunsec
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Details
- Published
- 2026-07-03
- Last updated
- 2026-09-15
- State
- Published
- Assigner (CNA)
- curl
Exploit prediction (EPSS)
0.3%
Probability of exploitation in 30 days
23.8%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- No
- Exploitation
- Proof of concept
- Technical impact
- Total
Weaknesses (CWE)
- CWE-295Improper Certificate Validation