CVE-2026-64649

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Source
https://cve.org/CVERecord?id=CVE-2026-64649
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-64649.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-64649
Aliases
Downstream
Related
Published
2026-07-27T19:27:58.865Z
Modified
2026-08-12T03:51:11.595230939Z
Severity
  • 8.3 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N CVSS Calculator
Summary
Next.js: Server-Side Request Forgery in Server Actions on Custom Servers
Details

Next.js is a React framework for building full-stack web applications. In versions 14.1.1 through 15.5.20 and 16.0.0 through 16.2.10, when a Server Action forwards or redirects a request, an attacker can cause the server to send that outbound request to a malicious host (Server-Side Request Forgery). This requires the attacker's request to control Host-associated headers. In some configurations, it's also possible to obtain internal values that weaken middleware/proxy authorization. Applications that use Server Actions are affected when the incoming host header is not fixed to a trusted value. This typically occurs on custom servers, or on deployments not behind a proxy that pins the host. Managed hosting pins the host upstream and is not affected; next start and standalone output do the same from version 14.2 onward. This issue has been fixed in versions 15.5.21 and 16.2.11.

Database specific 
{
    "unresolved_ranges": [
        {
            "extracted_events": [
                {
                    "introduced": ">= 16.0.0 < 16.2.11"
                },
                {
                    "last_affected": ">= 16.0.0 < 16.2.11"
                }
            ],
            "source": "AFFECTED_FIELD"
        }
    ],
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-918"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64649.json"
}
References

Affected packages

Git / github.com/vercel/next.js

Affected ranges

Type
GIT
Repo
https://github.com/vercel/next.js
Events
Introduced
5f59ee5f197a09275da7a9fa876986f22f4b7711
Fixed
e26f6ffaa710fc62ca0c8640db0e43b6663edf32
Introduced
950609f96f694c5475d18cd2d72a0052ca04d4b9
Fixed
9beca0821cf4606ae33466ed6f4fc75f2887a4da
Fixed
b51206321854193208c0805ba42acc49287f942b
Fixed
e3e5666ccead3a15162793d697af5e48b7cc0498
Database specific
Show details 
{
    "extracted_events": [
        {
            "introduced": "14.1.1"
        },
        {
            "fixed": "15.5.21"
        },
        {
            "introduced": "16.0.0"
        },
        {
            "fixed": "16.2.11"
        }
    ],
    "source": [
        "CPE_RANGE",
        "REFERENCES"
    ],
    "cpe": "cpe:2.3:a:vercel:next.js:*:*:*:*:*:node.js:*:*"
}

Affected versions

v16.*
v16.0.0
v16.0.1
v16.0.1-canary.0
v16.0.1-canary.1
v16.0.1-canary.2
v16.0.1-canary.3
v16.0.1-canary.4
v16.0.1-canary.5
v16.0.1-canary.6
v16.0.2-canary.0
v16.0.2-canary.1
v16.0.2-canary.10
v16.0.2-canary.11
v16.0.2-canary.12
v16.0.2-canary.13
v16.0.2-canary.14
v16.0.2-canary.15
v16.0.2-canary.16
v16.0.2-canary.17
v16.0.2-canary.18
v16.0.2-canary.19
v16.0.2-canary.2
v16.0.2-canary.20
v16.0.2-canary.21
v16.0.2-canary.22
v16.0.2-canary.23
v16.0.2-canary.24
v16.0.2-canary.25
v16.0.2-canary.26
v16.0.2-canary.27
v16.0.2-canary.28
v16.0.2-canary.29
v16.0.2-canary.3
v16.0.2-canary.30
v16.0.2-canary.31
v16.0.2-canary.32
v16.0.2-canary.33
v16.0.2-canary.34
v16.0.2-canary.4
v16.0.2-canary.5
v16.0.2-canary.6
v16.0.2-canary.7
v16.0.2-canary.8
v16.0.2-canary.9
v16.1.0
v16.1.0-canary.0
v16.1.0-canary.1
v16.1.0-canary.10
v16.1.0-canary.11
v16.1.0-canary.12
v16.1.0-canary.13
v16.1.0-canary.14
v16.1.0-canary.15
v16.1.0-canary.16
v16.1.0-canary.17
v16.1.0-canary.18
v16.1.0-canary.19
v16.1.0-canary.2
v16.1.0-canary.20
v16.1.0-canary.21
v16.1.0-canary.22
v16.1.0-canary.23
v16.1.0-canary.24
v16.1.0-canary.25
v16.1.0-canary.26
v16.1.0-canary.27
v16.1.0-canary.28
v16.1.0-canary.29
v16.1.0-canary.3
v16.1.0-canary.30
v16.1.0-canary.31
v16.1.0-canary.32
v16.1.0-canary.33
v16.1.0-canary.34
v16.1.0-canary.4
v16.1.0-canary.5
v16.1.0-canary.6
v16.1.0-canary.7
v16.1.0-canary.8
v16.1.0-canary.9
v16.1.1-canary.0
v16.1.1-canary.1
v16.1.1-canary.10
v16.1.1-canary.11
v16.1.1-canary.12
v16.1.1-canary.13
v16.1.1-canary.14
v16.1.1-canary.15
v16.1.1-canary.16
v16.1.1-canary.17
v16.1.1-canary.18
v16.1.1-canary.19
v16.1.1-canary.2
v16.1.1-canary.20
v16.1.1-canary.21
v16.1.1-canary.22
v16.1.1-canary.23
v16.1.1-canary.24
v16.1.1-canary.25
v16.1.1-canary.26
v16.1.1-canary.27
v16.1.1-canary.28
v16.1.1-canary.29
v16.1.1-canary.3
v16.1.1-canary.30
v16.1.1-canary.31
v16.1.1-canary.32
v16.1.1-canary.33
v16.1.1-canary.34
v16.1.1-canary.35
v16.1.1-canary.36
v16.1.1-canary.4
v16.1.1-canary.5
v16.1.1-canary.6
v16.1.1-canary.7
v16.1.1-canary.8
v16.1.1-canary.9
v16.2.0
v16.2.0-canary.0
v16.2.0-canary.1
v16.2.0-canary.10
v16.2.0-canary.100
v16.2.0-canary.101
v16.2.0-canary.102
v16.2.0-canary.103
v16.2.0-canary.104
v16.2.0-canary.11
v16.2.0-canary.12
v16.2.0-canary.13
v16.2.0-canary.14
v16.2.0-canary.15
v16.2.0-canary.16
v16.2.0-canary.17
v16.2.0-canary.18
v16.2.0-canary.19
v16.2.0-canary.2
v16.2.0-canary.20
v16.2.0-canary.21
v16.2.0-canary.22
v16.2.0-canary.23
v16.2.0-canary.24
v16.2.0-canary.25
v16.2.0-canary.26
v16.2.0-canary.27
v16.2.0-canary.28
v16.2.0-canary.29
v16.2.0-canary.3
v16.2.0-canary.30
v16.2.0-canary.31
v16.2.0-canary.32
v16.2.0-canary.33
v16.2.0-canary.34
v16.2.0-canary.35
v16.2.0-canary.36
v16.2.0-canary.37
v16.2.0-canary.38
v16.2.0-canary.39
v16.2.0-canary.4
v16.2.0-canary.40
v16.2.0-canary.41
v16.2.0-canary.42
v16.2.0-canary.43
v16.2.0-canary.44
v16.2.0-canary.45
v16.2.0-canary.46
v16.2.0-canary.47
v16.2.0-canary.48
v16.2.0-canary.49
v16.2.0-canary.5
v16.2.0-canary.50
v16.2.0-canary.51
v16.2.0-canary.52
v16.2.0-canary.53
v16.2.0-canary.54
v16.2.0-canary.55
v16.2.0-canary.56
v16.2.0-canary.57
v16.2.0-canary.58
v16.2.0-canary.59
v16.2.0-canary.6
v16.2.0-canary.60
v16.2.0-canary.61
v16.2.0-canary.62
v16.2.0-canary.63
v16.2.0-canary.64
v16.2.0-canary.65
v16.2.0-canary.66
v16.2.0-canary.67
v16.2.0-canary.68
v16.2.0-canary.69
v16.2.0-canary.7
v16.2.0-canary.70
v16.2.0-canary.71
v16.2.0-canary.72
v16.2.0-canary.73
v16.2.0-canary.74
v16.2.0-canary.75
v16.2.0-canary.76
v16.2.0-canary.77
v16.2.0-canary.78
v16.2.0-canary.79
v16.2.0-canary.8
v16.2.0-canary.80
v16.2.0-canary.81
v16.2.0-canary.82
v16.2.0-canary.83
v16.2.0-canary.84
v16.2.0-canary.85
v16.2.0-canary.86
v16.2.0-canary.87
v16.2.0-canary.88
v16.2.0-canary.89
v16.2.0-canary.9
v16.2.0-canary.90
v16.2.0-canary.91
v16.2.0-canary.92
v16.2.0-canary.93
v16.2.0-canary.94
v16.2.0-canary.95
v16.2.0-canary.96
v16.2.0-canary.97
v16.2.0-canary.98
v16.2.0-canary.99
v16.2.1
v16.2.10
v16.2.2
v16.2.3
v16.2.4
v16.2.5
v16.2.6
v16.2.8
v16.2.9

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-64649.json"