CVE-2026-49411

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Source
https://cve.org/CVERecord?id=CVE-2026-49411
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-49411.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-49411
Aliases
Published
2026-06-23T17:18:07.354Z
Modified
2026-08-12T03:51:40.963748493Z
Severity
  • 6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N CVSS Calculator
Summary
Deno Node TCPWrap numeric hostname aliases bypass --deny-net resolved-IP deny checks
Details

Deno is a JavaScript, TypeScript, and WebAssembly runtime. Prior to 2.8.0, the Node.js compatibility TCP path checked the permission against the original hostname string before resolution and then did not re-check after resolution. A caller could therefore pass a numeric alias of an IP address (for example the decimal integer 2130706433 or the hex form 0x7f000001, both of which resolve to 127.0.0.1) and reach the denied destination through node:net.connect or node:http.request's { host, port } options form. This vulnerability is fixed in 2.8.0.

Database specific 
{
    "cwe_ids": [
        "CWE-284"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/49xxx/CVE-2026-49411.json",
    "cna_assigner": "GitHub_M"
}
References

Affected packages

Git / github.com/denoland/deno

Affected ranges

Type
GIT
Repo
https://github.com/denoland/deno
Events
Introduced
2d674b25625bcc367853d00fe86f6e84390f88cb
Fixed
fbb5be31ac23ef40f51025d6aeaaa91d9f082e4a
Database specific
Show details 
{
    "cpe": "cpe:2.3:a:deno:deno:*:*:*:*:*:*:*:*",
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "2.8.0"
        },
        {
            "introduced": "2.7.14"
        }
    ],
    "source": [
        "AFFECTED_FIELD",
        "CPE_RANGE"
    ]
}

Affected versions

v2.*
v2.7.14

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-49411.json"