CVE-2026-8286

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Source
https://cve.org/CVERecord?id=CVE-2026-8286
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-8286.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-8286
Aliases
Downstream
Related
Published
2026-07-03T06:14:17Z
Modified
2026-09-17T03:31:03Z
Severity
  • 8.1 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N CVSS Calculator
Summary
wrong STARTTLS connection reuse
Details

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.

Database specific 
{
    "cna_assigner": "curl",
    "cwe_ids": [
        "CWE-295"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/8xxx/CVE-2026-8286.json",
    "unresolved_ranges": [
        {
            "extracted_events": [
                {
                    "introduced": "7.30.0"
                },
                {
                    "fixed": "8.14.2"
                },
                {
                    "introduced": "8.15.0"
                },
                {
                    "fixed": "8.16.1"
                },
                {
                    "introduced": "8.17.0"
                },
                {
                    "fixed": "8.20.1"
                },
                {
                    "introduced": "a1701eea289fe7ea80651f801cf992838a491dde"
                },
                {
                    "fixed": "a86efdd7ca5433de9231e650f18247de8319ad16"
                }
            ],
            "source": "AFFECTED_FIELD"
        }
    ]
}
References

Affected packages

Git / github.com/curl/curl

Affected ranges

Type
GIT
Repo
https://github.com/curl/curl
Events
Introduced
a05f34973e6c4bb629d018f7cb51487be1c904d8
Fixed
68720b4837284335b2d63cb358f8f6ce65f5bc55
Database specific
Show details 
{
    "cpe": "cpe:2.3:a:haxx:curl:*:*:*:*:*:*:*:*",
    "extracted_events": [
        {
            "introduced": "8.20.0"
        },
        {
            "last_affected": "8.20.0"
        },
        {
            "introduced": "8.19.0"
        },
        {
            "last_affected": "8.19.0"
        },
        {
            "introduced": "8.18.0"
        },
        {
            "last_affected": "8.18.0"
        },
        {
            "introduced": "8.17.0"
        },
        {
            "last_affected": "8.17.0"
        },
        {
            "introduced": "8.16.0"
        },
        {
            "last_affected": "8.16.0"
        },
        {
            "introduced": "8.15.0"
        },
        {
            "last_affected": "8.15.0"
        },
        {
            "introduced": "8.14.1"
        },
        {
            "last_affected": "8.14.1"
        },
        {
            "introduced": "8.14.0"
        },
        {
            "last_affected": "8.14.0"
        },
        {
            "introduced": "8.13.0"
        },
        {
            "last_affected": "8.13.0"
        },
        {
            "introduced": "8.12.1"
        },
        {
            "last_affected": "8.12.1"
        },
        {
            "introduced": "8.12.0"
        },
        {
            "last_affected": "8.12.0"
        },
        {
            "introduced": "8.11.1"
        },
        {
            "last_affected": "8.11.1"
        },
        {
            "introduced": "8.11.0"
        },
        {
            "last_affected": "8.11.0"
        },
        {
            "introduced": "8.10.1"
        },
        {
            "last_affected": "8.10.1"
        },
        {
            "introduced": "8.10.0"
        },
        {
            "last_affected": "8.10.0"
        },
        {
            "introduced": "8.9.1"
        },
        {
            "last_affected": "8.9.1"
        },
        {
            "introduced": "8.9.0"
        },
        {
            "last_affected": "8.9.0"
        },
        {
            "introduced": "8.8.0"
        },
        {
            "last_affected": "8.8.0"
        },
        {
            "introduced": "8.7.1"
        },
        {
            "last_affected": "8.7.1"
        },
        {
            "introduced": "8.7.0"
        },
        {
            "last_affected": "8.7.0"
        },
        {
            "introduced": "8.6.0"
        },
        {
            "last_affected": "8.6.0"
        },
        {
            "introduced": "8.5.0"
        },
        {
            "last_affected": "8.5.0"
        },
        {
            "introduced": "8.4.0"
        },
        {
            "last_affected": "8.4.0"
        },
        {
            "introduced": "8.3.0"
        },
        {
            "last_affected": "8.3.0"
        },
        {
            "introduced": "8.2.1"
        },
        {
            "last_affected": "8.2.1"
        },
        {
            "introduced": "8.2.0"
        },
        {
            "last_affected": "8.2.0"
        },
        {
            "introduced": "8.1.2"
        },
        {
            "last_affected": "8.1.2"
        },
        {
            "introduced": "8.1.1"
        },
        {
            "last_affected": "8.1.1"
        },
        {
            "introduced": "8.1.0"
        },
        {
            "last_affected": "8.1.0"
        },
        {
            "introduced": "8.0.1"
        },
        {
            "last_affected": "8.0.1"
        },
        {
            "introduced": "8.0.0"
        },
        {
            "last_affected": "8.0.0"
        },
        {
            "introduced": "7.88.1"
        },
        {
            "last_affected": "7.88.1"
        },
        {
            "introduced": "7.88.0"
        },
        {
            "last_affected": "7.88.0"
        },
        {
            "introduced": "7.87.0"
        },
        {
            "last_affected": "7.87.0"
        },
        {
            "introduced": "7.86.0"
        },
        {
            "last_affected": "7.86.0"
        },
        {
            "introduced": "7.85.0"
        },
        {
            "last_affected": "7.85.0"
        },
        {
            "introduced": "7.84.0"
        },
        {
            "last_affected": "7.84.0"
        },
        {
            "introduced": "7.83.1"
        },
        {
            "last_affected": "7.83.1"
        },
        {
            "introduced": "7.83.0"
        },
        {
            "last_affected": "7.83.0"
        },
        {
            "introduced": "7.82.0"
        },
        {
            "last_affected": "7.82.0"
        },
        {
            "introduced": "7.81.0"
        },
        {
            "last_affected": "7.81.0"
        },
        {
            "introduced": "7.80.0"
        },
        {
            "last_affected": "7.80.0"
        },
        {
            "introduced": "7.79.1"
        },
        {
            "last_affected": "7.79.1"
        },
        {
            "introduced": "7.79.0"
        },
        {
            "last_affected": "7.79.0"
        },
        {
            "introduced": "7.78.0"
        },
        {
            "last_affected": "7.78.0"
        },
        {
            "introduced": "7.77.0"
        },
        {
            "last_affected": "7.77.0"
        },
        {
            "introduced": "7.76.1"
        },
        {
            "last_affected": "7.76.1"
        },
        {
            "introduced": "7.76.0"
        },
        {
            "last_affected": "7.76.0"
        },
        {
            "introduced": "7.75.0"
        },
        {
            "last_affected": "7.75.0"
        },
        {
            "introduced": "7.74.0"
        },
        {
            "last_affected": "7.74.0"
        },
        {
            "introduced": "7.73.0"
        },
        {
            "last_affected": "7.73.0"
        },
        {
            "introduced": "7.72.0"
        },
        {
            "last_affected": "7.72.0"
        },
        {
            "introduced": "7.71.1"
        },
        {
            "last_affected": "7.71.1"
        },
        {
            "introduced": "7.71.0"
        },
        {
            "last_affected": "7.71.0"
        },
        {
            "introduced": "7.70.0"
        },
        {
            "last_affected": "7.70.0"
        },
        {
            "introduced": "7.69.1"
        },
        {
            "last_affected": "7.69.1"
        },
        {
            "introduced": "7.69.0"
        },
        {
            "last_affected": "7.69.0"
        },
        {
            "introduced": "7.68.0"
        },
        {
            "last_affected": "7.68.0"
        },
        {
            "introduced": "7.67.0"
        },
        {
            "last_affected": "7.67.0"
        },
        {
            "introduced": "7.66.0"
        },
        {
            "last_affected": "7.66.0"
        },
        {
            "introduced": "7.65.3"
        },
        {
            "last_affected": "7.65.3"
        },
        {
            "introduced": "7.65.2"
        },
        {
            "last_affected": "7.65.2"
        },
        {
            "introduced": "7.65.1"
        },
        {
            "last_affected": "7.65.1"
        },
        {
            "introduced": "7.65.0"
        },
        {
            "last_affected": "7.65.0"
        },
        {
            "introduced": "7.64.1"
        },
        {
            "last_affected": "7.64.1"
        },
        {
            "introduced": "7.64.0"
        },
        {
            "last_affected": "7.64.0"
        },
        {
            "introduced": "7.63.0"
        },
        {
            "last_affected": "7.63.0"
        },
        {
            "introduced": "7.62.0"
        },
        {
            "last_affected": "7.62.0"
        },
        {
            "introduced": "7.61.1"
        },
        {
            "last_affected": "7.61.1"
        },
        {
            "introduced": "7.61.0"
        },
        {
            "last_affected": "7.61.0"
        },
        {
            "introduced": "7.60.0"
        },
        {
            "last_affected": "7.60.0"
        },
        {
            "introduced": "7.59.0"
        },
        {
            "last_affected": "7.59.0"
        },
        {
            "introduced": "7.58.0"
        },
        {
            "last_affected": "7.58.0"
        },
        {
            "introduced": "7.57.0"
        },
        {
            "last_affected": "7.57.0"
        },
        {
            "introduced": "7.56.1"
        },
        {
            "last_affected": "7.56.1"
        },
        {
            "introduced": "7.56.0"
        },
        {
            "last_affected": "7.56.0"
        },
        {
            "introduced": "7.55.1"
        },
        {
            "last_affected": "7.55.1"
        },
        {
            "introduced": "7.55.0"
        },
        {
            "last_affected": "7.55.0"
        },
        {
            "introduced": "7.54.1"
        },
        {
            "last_affected": "7.54.1"
        },
        {
            "introduced": "7.54.0"
        },
        {
            "last_affected": "7.54.0"
        },
        {
            "introduced": "7.53.1"
        },
        {
            "last_affected": "7.53.1"
        },
        {
            "introduced": "7.53.0"
        },
        {
            "last_affected": "7.53.0"
        },
        {
            "introduced": "7.52.1"
        },
        {
            "last_affected": "7.52.1"
        },
        {
            "introduced": "7.52.0"
        },
        {
            "last_affected": "7.52.0"
        },
        {
            "introduced": "7.51.0"
        },
        {
            "last_affected": "7.51.0"
        },
        {
            "introduced": "7.50.3"
        },
        {
            "last_affected": "7.50.3"
        },
        {
            "introduced": "7.50.2"
        },
        {
            "last_affected": "7.50.2"
        },
        {
            "introduced": "7.50.1"
        },
        {
            "last_affected": "7.50.1"
        },
        {
            "introduced": "7.50.0"
        },
        {
            "last_affected": "7.50.0"
        },
        {
            "introduced": "7.49.1"
        },
        {
            "last_affected": "7.49.1"
        },
        {
            "introduced": "7.49.0"
        },
        {
            "last_affected": "7.49.0"
        },
        {
            "introduced": "7.48.0"
        },
        {
            "last_affected": "7.48.0"
        },
        {
            "introduced": "7.47.1"
        },
        {
            "last_affected": "7.47.1"
        },
        {
            "introduced": "7.47.0"
        },
        {
            "last_affected": "7.47.0"
        },
        {
            "introduced": "7.46.0"
        },
        {
            "last_affected": "7.46.0"
        },
        {
            "introduced": "7.45.0"
        },
        {
            "last_affected": "7.45.0"
        },
        {
            "introduced": "7.44.0"
        },
        {
            "last_affected": "7.44.0"
        },
        {
            "introduced": "7.43.0"
        },
        {
            "last_affected": "7.43.0"
        },
        {
            "introduced": "7.42.1"
        },
        {
            "last_affected": "7.42.1"
        },
        {
            "introduced": "7.42.0"
        },
        {
            "last_affected": "7.42.0"
        },
        {
            "introduced": "7.41.0"
        },
        {
            "last_affected": "7.41.0"
        },
        {
            "introduced": "7.40.0"
        },
        {
            "last_affected": "7.40.0"
        },
        {
            "introduced": "7.39.0"
        },
        {
            "last_affected": "7.39.0"
        },
        {
            "introduced": "7.38.0"
        },
        {
            "last_affected": "7.38.0"
        },
        {
            "introduced": "7.37.1"
        },
        {
            "last_affected": "7.37.1"
        },
        {
            "introduced": "7.37.0"
        },
        {
            "last_affected": "7.37.0"
        },
        {
            "introduced": "7.36.0"
        },
        {
            "last_affected": "7.36.0"
        },
        {
            "introduced": "7.35.0"
        },
        {
            "last_affected": "7.35.0"
        },
        {
            "introduced": "7.34.0"
        },
        {
            "last_affected": "7.34.0"
        },
        {
            "introduced": "7.33.0"
        },
        {
            "last_affected": "7.33.0"
        },
        {
            "introduced": "7.32.0"
        },
        {
            "last_affected": "7.32.0"
        },
        {
            "introduced": "7.31.0"
        },
        {
            "last_affected": "7.31.0"
        },
        {
            "introduced": "7.30.0"
        },
        {
            "last_affected": "7.30.0"
        },
        {
            "fixed": "8.21.0"
        }
    ],
    "source": [
        "AFFECTED_FIELD",
        "CPE_RANGE"
    ]
}

Affected versions

7.*
7.30.0
7.31.0
7.32.0
7.33.0
7.34.0
7.35.0
7.36.0
7.37.0
7.37.1
7.38.0
7.39.0
7.40.0
7.41.0
7.42.0
7.42.1
7.43.0
7.44.0
7.45.0
7.46.0
7.47.0
7.47.1
7.48.0
7.49.0
7.49.1
7.50.0
7.50.1
7.50.2
7.50.3
7.51.0
7.52.0
7.52.1
7.53.0
7.53.1
7.54.0
7.54.1
7.55.0
7.55.1
7.56.0
7.56.1
7.57.0
7.58.0
7.59.0
7.60.0
7.61.0
7.61.1
7.62.0
7.63.0
7.64.0
7.64.1
7.65.0
7.65.1
7.65.2
7.65.3
7.66.0
7.67.0
7.68.0
7.69.0
7.69.1
7.70.0
7.71.0
7.71.1
7.72.0
7.73.0
7.74.0
7.75.0
7.76.0
7.76.1
7.77.0
7.78.0
7.79.0
7.79.1
7.80.0
7.81.0
7.82.0
7.83.0
7.83.1
7.84.0
7.85.0
7.86.0
7.87.0
7.88.0
7.88.1
8.*
8.0.0
8.0.1
8.1.0
8.1.1
8.1.2
8.10.0
8.10.1
8.11.0
8.11.1
8.12.0
8.12.1
8.13.0
8.14.0
8.14.1
8.15.0
8.16.0
8.17.0
8.18.0
8.19.0
8.2.0
8.2.1
8.20.0
8.3.0
8.4.0
8.5.0
8.6.0
8.7.0
8.7.1
8.8.0
8.9.0
8.9.1
Other
curl-8_20_0
rc-8_21_0-1
rc-8_21_0-2
rc-8_21_0-3

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-8286.json"