CVE-2026-82854

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Source
https://cve.org/CVERecord?id=CVE-2026-82854
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-82854.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-82854
Aliases
Downstream
Published
2026-08-31T08:46:28.405Z
Modified
2026-09-01T03:46:38.211049283Z
Severity
  • 9.3 (Critical) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N CVSS Calculator
Summary
Nodemailer before 8.0.3 SMTP Command Injection via envelope.size
Details

Nodemailer before 8.0.4 is vulnerable to SMTP command injection through the unsanitized envelope.size parameter. When an application passes a custom envelope object with a size property containing CRLF characters to sendMail(), the value is concatenated into the SMTP MAIL FROM command (as SIZE=...) without sanitization, allowing injection of arbitrary SMTP commands such as RCPT TO to silently add attacker-controlled recipients. Exploitation requires the application to expose the envelope size to attacker-controlled input, as Nodemailer does not include size in the default auto-constructed envelope.

Database specific 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/82xxx/CVE-2026-82854.json",
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
        "CWE-93"
    ]
}
References

Affected packages

Git / github.com/nodemailer/nodemailer

Affected ranges

Type
GIT
Repo
https://github.com/nodemailer/nodemailer
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
4e702e97650aaff442a7bc040957ba9c53c614b8
Database specific
Show details 
{
    "source": "AFFECTED_FIELD",
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "8.0.3"
        }
    ]
}

Affected versions

v0.*
v0.1
v0.1.1
v0.1.10
v0.1.12
v0.1.13
v0.1.14
v0.1.15
v0.1.16
v0.1.17
v0.1.19
v0.1.2
v0.1.20
v0.1.21
v0.1.22
v0.1.23
v0.1.24
v0.1.3
v0.1.4
v0.1.5
v0.1.6
v0.1.7
v0.1.8
v0.1.9
v0.2.0
v0.2.2
v0.2.3
v0.2.4
v0.3.0
v0.3.1
v0.3.10
v0.3.11
v0.3.12
v0.3.13
v0.3.14
v0.3.15
v0.3.16
v0.3.17
v0.3.18
v0.3.19
v0.3.2
v0.3.20
v0.3.21
v0.3.22
v0.3.25
v0.3.26
v0.3.27
v0.3.28
v0.3.29
v0.3.3
v0.3.30
v0.3.31
v0.3.32
v0.3.33
v0.3.34
v0.3.35
v0.3.37
v0.3.38
v0.3.39
v0.3.4
v0.3.40
v0.3.41
v0.3.42
v0.3.43
v0.3.44
v0.3.45
v0.3.5
v0.3.6
v0.3.7
v0.3.8
v0.3.9
v0.4.0
v0.4.1
v0.4.2
v0.4.3
v0.4.4
v0.5.0
v0.5.1
v0.5.11
v0.5.12
v0.5.13
v0.5.14
v0.5.15
v0.5.2
v0.5.3
v0.5.4
v0.5.5
v0.5.6
v0.5.7
v0.5.8
v0.5.9
v0.6.0
v0.6.1
v0.6.2
v0.6.3
v0.6.4
v0.6.5
v0.7.0
v0.7.1
v1.*
v1.0.0
v1.0.1
v1.0.2
v1.0.3
v1.0.4
v1.1.0
v1.1.1
v1.1.2
v1.10.0
v1.11.0
v1.2.0
v1.2.1
v1.2.2
v1.3.0
v1.3.1
v1.3.2
v1.3.3
v1.3.4
v1.4.0
v1.5.0
v1.6.0
v1.7.0
v1.8.0
v1.9.0
v2.*
v2.0.0
v2.1.0
v2.2.0
v2.2.1
v2.3.0
v2.3.1
v2.3.2
v2.3.2-gpgtest.0
v2.4.0
v2.4.1
v2.4.2
v2.5.0
v2.6.0
v2.6.1
v2.6.2
v2.6.3
v2.6.4
v2.7.0
v2.7.1
v2.7.2
v3.*
v3.0.0
v3.0.1
v3.0.2
v3.1.0
v3.1.1
v3.1.2
v3.1.3
v3.1.4
v3.1.5
v3.1.6
v3.1.7
v3.1.8
v4.*
v4.0.0
v4.0.1
v4.1.0
v4.1.1
v4.1.2
v4.1.3
v4.2.0
v4.3.0
v4.3.1
v4.4.0
v4.4.1
v4.4.2
v4.5.0
v4.6.0
v4.6.1
v4.6.2
v4.6.3
v4.6.4
v4.6.5
v4.6.6
v4.6.7
v4.6.8
v4.7.0
v5.*
v5.0.0
v5.0.1
v5.1.0
v5.1.1
v6.*
v6.0.0
v6.1.0
v6.1.1
v6.2.0
v6.2.1
v6.3.0
v6.3.1
v6.4.0
v6.4.1
v6.4.10
v6.4.11
v6.4.12
v6.4.13
v6.4.14
v6.4.15
v6.4.16
v6.4.17
v6.4.18
v6.4.2
v6.4.3
v6.4.4
v6.4.5
v6.4.6
v6.4.7
v6.4.8
v6.5.0
v6.6.0
v6.6.1
v6.6.3
v6.6.4
v6.6.5
v6.7.0
v6.7.1
v6.7.2
v6.7.3
v6.7.4
v6.7.5
v6.7.6
v6.7.7
v6.7.8
v6.8.0
v6.9.0
v6.9.1
v6.9.10
v6.9.13
v6.9.14
v6.9.15
v6.9.16
v6.9.2
v6.9.3
v6.9.4
v6.9.5
v6.9.6
v6.9.7
v6.9.8
v7.*
v7.0.10
v7.0.11
v7.0.12
v7.0.13
v7.0.5
v7.0.6
v7.0.7
v7.0.9
v8.*
v8.0.0
v8.0.1
v8.0.2

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-82854.json"