CVE-2026-8458

See a problem?
Please try reporting it to the source first.
Source
https://cve.org/CVERecord?id=CVE-2026-8458
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-8458.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-8458
Aliases
Downstream
Related
Published
2026-07-03T06:14:42Z
Modified
2026-09-17T03:30:19Z
Severity
  • 6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N CVSS Calculator
Summary
wrong reuse for different services
Details

libcurl might in some circumstances reuse the wrong connection when asked to do Negotiate-authenticated ones, even when they are set to use different "services".

libcurl features a pool of recent connections so that subsequent requests can reuse an existing connection to avoid overhead.

When reusing a connection a range of criteria must be met. Due to a logical error in the code, a request that was issued by an application could wrongfully reuse an existing connection to the same server that was authenticated using different services.

Database specific 
{
    "cna_assigner": "curl",
    "cwe_ids": [
        "CWE-488"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/8xxx/CVE-2026-8458.json",
    "unresolved_ranges": [
        {
            "extracted_events": [
                {
                    "introduced": "7.43.0"
                },
                {
                    "fixed": "8.14.2"
                },
                {
                    "introduced": "8.15.0"
                },
                {
                    "fixed": "8.16.1"
                },
                {
                    "introduced": "8.17.0"
                },
                {
                    "fixed": "8.20.1"
                },
                {
                    "introduced": "97c272e5d173ad5f706443e2477f0a84f0044edd"
                },
                {
                    "fixed": "5e99b73cf441d9c369768b9cd48b5389b9a2503d"
                }
            ],
            "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
a05f34973e6c4bb629d018f7cb51487be1c904d8
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"
        },
        {
            "fixed": "8.20.0"
        }
    ],
    "source": [
        "AFFECTED_FIELD",
        "CPE_RANGE"
    ]
}

Affected versions

7.*
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

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-8458.json"