CVE-2026-49993

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Source
https://cve.org/CVERecord?id=CVE-2026-49993
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-49993.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2026-49993
Aliases
Downstream
Related
GHSA (2)
Published
2026-06-12T12:57:43Z
Modified
2026-10-16T02:59:54Z
Severity
  • 5.9 (Medium) CVSS_V4 - CVSS:4.0/AV:A/AC:H/AT:P/PR:N/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N CVSS Calculator
Summary
@nuxt/webpack-builder and @nuxt/rspack-builder dev server same-origin check bypassed when Sec-Fetch-Site, Origin, and Referer are all absent (incomplete fix for GHSA-6m52-m754-pw2g)
Details

Nuxt is an open-source web development framework for Vue.js. In @nuxt/rspack-builder and @nuxt/webpack-builder from versions 3.15.4 to before 3.21.7 and 4.0.0 to before 4.4.7, there is an incomplete fix for GHSA-6m52-m754-pw2g. Source code may still be stolen during dev when using the webpack / rspack builder if the dev server is bound to a non-loopback address (e.g. nuxt dev --host) and the developer opens a malicious site on the same network. This issue has been patched in versions 3.21.7 and 4.4.7.

Database specific 
{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-749"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/49xxx/CVE-2026-49993.json"
}
References

Affected packages

Git / github.com/nuxt/nuxt

Affected ranges

Type
GIT
Repo
https://github.com/nuxt/nuxt
Events
Introduced
244da170dd61e9aa790d5e9fdf988aa0a128d55a
Fixed
fd806be61503f6ccad099c070a5d803777ba8a57
Introduced
8aacdde48e8388c8bb11b9a5c2f59935341bfcfd
Fixed
b7d57903b947e788fadfcfdf88be7951943731bf
Fixed
77187ee4015e9267fb464951542a3e09e8b5fa05
Fixed
e351de943e82db16970618b60dc7fdbaa58630f3
Database specific
Show details 
{
    "extracted_events": [
        {
            "cpe": "cpe:2.3:a:nuxt:nuxt\\/rspack-builder:*:*:*:*:*:node.js:*:*",
            "range": [
                {
                    "introduced": "3.15.4"
                },
                {
                    "fixed": "3.21.7"
                }
            ],
            "source": "CPE_RANGE"
        },
        {
            "cpe": "cpe:2.3:a:nuxt:nuxt\\/webpack-builder:*:*:*:*:*:node.js:*:*",
            "range": [
                {
                    "introduced": "3.15.4"
                },
                {
                    "fixed": "3.21.7"
                }
            ],
            "source": "CPE_RANGE"
        },
        {
            "cpe": "cpe:2.3:a:nuxt:nuxt\\/rspack-builder:*:*:*:*:*:node.js:*:*",
            "range": [
                {
                    "introduced": "4.0.0"
                },
                {
                    "fixed": "4.4.7"
                }
            ],
            "source": "CPE_RANGE"
        },
        {
            "cpe": "cpe:2.3:a:nuxt:nuxt\\/webpack-builder:*:*:*:*:*:node.js:*:*",
            "range": [
                {
                    "introduced": "4.0.0"
                },
                {
                    "fixed": "4.4.7"
                }
            ],
            "source": "CPE_RANGE"
        },
        {
            "range": [
                {
                    "fixed": "77187ee4015e9267fb464951542a3e09e8b5fa05"
                }
            ],
            "source": "REFERENCES_COMMIT"
        },
        {
            "range": [
                {
                    "fixed": "e351de943e82db16970618b60dc7fdbaa58630f3"
                }
            ],
            "source": "REFERENCES_COMMIT"
        }
    ]
}

Affected versions

v3.*
v3.15.4
v3.16.0
v3.16.1
v3.16.2
v3.17.0
v3.17.1
v3.17.2
v3.17.3
v3.17.4
v3.17.5
v3.17.6
v3.17.7
v3.18.0
v3.18.1
v3.19.0
v3.19.1
v3.19.2
v3.19.3
v3.20.0
v3.20.1
v3.20.2
v3.21.0
v3.21.1
v3.21.2
v3.21.3
v3.21.4
v3.21.5
v3.21.6
v4.*
v4.0.0
v4.0.1
v4.0.2
v4.0.3
v4.1.0
v4.1.1
v4.1.2
v4.1.3
v4.2.0
v4.2.1
v4.2.2
v4.3.0
v4.3.1
v4.4.0
v4.4.1
v4.4.2
v4.4.3
v4.4.4
v4.4.5
v4.4.6

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-49993.json"