CVE-2026-110871

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Source
https://cve.org/CVERecord?id=CVE-2026-110871
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-110871.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-110871
Aliases
  • GHSA-39m8-27wv-hr27
Downstream
Published
2026-10-14T22:52:59Z
Modified
2026-10-15T10:47:30Z
Severity
  • 7.1 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N CVSS Calculator
Summary
Nodemailer 3.0.0 before 10.0.10 Quadratic DKIM Header Unfolding Denial of Service
Details

Nodemailer from 3.0.0 before 10.0.10 contains a denial of service vulnerability in MessageParser.parseHeaders that allows users to exhaust CPU through quadratic header unfolding. Attackers can supply large recipient lists or long headers that fold into tens of thousands of continuation lines, blocking the Node.js event loop during DKIM signing.

Database specific 
{
    "cna_assigner":  "VulnCheck",
    "cwe_ids":  [
        "CWE-400"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/110xxx/CVE-2026-110871.json"
}
References

Affected packages

Git / github.com/nodemailer/nodemailer

Affected ranges

Type
GIT
Repo
https://github.com/nodemailer/nodemailer
Events
Introduced
eaef3b5217226cb092d8549752831cb2a9aeaea0
Fixed
a67b18203defb32f8e890fbb0ba018e826752563
Database specific
Show details 
{
    "extracted_events":  [
        {
            "introduced":  "3.0.0"
        },
        {
            "fixed":  "10.0.10"
        }
    ],
    "source":  "AFFECTED_FIELD"
}

Affected versions

v10.*
v10.0.0
v10.0.1
v10.0.2
v10.0.3
v10.0.4
v10.0.5
v10.0.6
v10.0.7
v10.0.8
v10.0.9
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
v8.0.10
v8.0.11
v8.0.2
v8.0.3
v8.0.4
v8.0.5
v8.0.6
v8.0.7
v8.0.8
v8.0.9
v9.*
v9.0.0
v9.0.1
v9.0.2
v9.0.3
v9.0.4
v9.0.5
v9.0.6
v9.1.0
v9.1.1

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-110871.json"