CVE-2026-56850

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Source
https://cve.org/CVERecord?id=CVE-2026-56850
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-56850.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-56850
Aliases
Downstream
Related
Published
2026-07-30T06:02:50.074Z
Modified
2026-08-27T11:46:43.161104046Z
Severity
  • 4.1 (Medium) CVSS_V3 - CVSS:3.0/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:H/A:N CVSS Calculator
Summary
[none]
Details

A flaw in Node.js HTTPS Agent connection reuse can cause PFX object-array key collisions, allowing mutual TLS (mTLS) client identities to be reused across requests configured with different client certificates.

This vulnerability affects Node.js 26.x, 24.x, and 22.x.

Database specific 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/56xxx/CVE-2026-56850.json",
    "unresolved_ranges": [
        {
            "source": "AFFECTED_FIELD",
            "extracted_events": [
                {
                    "introduced": "26.5.0"
                },
                {
                    "last_affected": "26.5.0"
                },
                {
                    "introduced": "24.18.0"
                },
                {
                    "last_affected": "24.18.0"
                },
                {
                    "introduced": "22.23.1"
                },
                {
                    "last_affected": "22.23.1"
                }
            ]
        }
    ],
    "cwe_ids": [
        "CWE-287"
    ],
    "cna_assigner": "hackerone"
}
References

Affected packages

Git / github.com/nodejs/node

Affected ranges

Type
GIT
Repo
https://github.com/nodejs/node
Events
Introduced
12fb157f79da8c094a54bc99370994941c28c235
Last affected
bd96dfbf0361576724b65322046e2ca9f9609cb9
Introduced
c5349f43cd66d2aa02d86414c9ed426f71d3ae48
Last affected
20da4aeadabc5b0a01e3fcf520f91df8285c68a2
Introduced
1eaf8a9bd9b665c104bc49f1890e962dddc87d8c
Last affected
bebd1b8d92bf4cc917844d6335ed1ecf9c2a75fb
Database specific
Show details 
{
    "source": "CPE_RANGE",
    "cpe": "cpe:2.3:a:nodejs:node.js:*:*:*:*:-:*:*:*",
    "extracted_events": [
        {
            "introduced": "22.0"
        },
        {
            "last_affected": "22.23.1"
        },
        {
            "introduced": "24.0.0"
        },
        {
            "last_affected": "24.18.0"
        },
        {
            "introduced": "26.0.0"
        },
        {
            "last_affected": "26.5.0"
        }
    ]
}

Affected versions

v22.*
v22.0.0
v22.1.0
v22.10.0
v22.11.0
v22.12.0
v22.13.0
v22.13.1
v22.14.0
v22.15.0
v22.15.1
v22.16.0
v22.17.0
v22.17.1
v22.18.0
v22.19.0
v22.2.0
v22.20.0
v22.21.0
v22.21.1
v22.22.0
v22.22.1
v22.22.2
v22.22.3
v22.23.0
v22.23.1
v22.3.0
v22.4.0
v22.4.1
v22.5.0
v22.5.1
v22.6.0
v22.7.0
v22.8.0
v22.9.0
v24.*
v24.0.0
v24.0.1
v24.0.2
v24.1.0
v24.10.0
v24.11.0
v24.11.1
v24.12.0
v24.13.0
v24.13.1
v24.14.0
v24.14.1
v24.15.0
v24.16.0
v24.17.0
v24.18.0
v24.2.0
v24.3.0
v24.4.0
v24.4.1
v24.5.0
v24.6.0
v24.7.0
v24.8.0
v24.9.0
v26.*
v26.0.0
v26.1.0
v26.2.0
v26.3.0
v26.3.1
v26.4.0
v26.5.0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-56850.json"