CVE-2026-90776

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Source
https://cve.org/CVERecord?id=CVE-2026-90776
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-90776.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-90776
Aliases
Downstream
CGA (24)
CLEANSTART (2)
CLSA (1)
DEBIAN (1)
ECHO (1)
ROOT (1)
UBUNTU (1)
Published
2026-09-13T11:42:26Z
Modified
2026-10-28T02:30:59Z
Severity
  • 8.7 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N CVSS Calculator
Summary
Nodemailer 9.1.0 through 10.0.4 Denial of Service via Quadratic Address Parsing
Details

Nodemailer versions 9.1.0 through 10.0.4 contain a quadratic time complexity vulnerability in the addressparser component when parsing email addresses with RFC 5322 comments. Attackers can craft malicious email headers with comment-separated atoms to consume excessive CPU and block the Node.js event loop for several seconds, causing denial of service.

Database specific 
{
    "cna_assigner":  "VulnCheck",
    "cwe_ids":  [
        "CWE-407"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90776.json"
}
References

Affected packages

Git / github.com/nodemailer/nodemailer

Affected ranges

Type
GIT
Repo
https://github.com/nodemailer/nodemailer
Events
Introduced
efd6e29c10c6e0c25c57bd2f2a71302838235a4f
Fixed
4dbeb235f78750ade54468f877165172338584d8
Fixed
c07f17518d25aca8ab2ad66968dcbca538c24b89
Database specific
Show details 
{
    "extracted_events":  [
        {
            "range":  [
                {
                    "introduced":  "9.1.0"
                },
                {
                    "fixed":  "10.0.5"
                }
            ],
            "source":  "AFFECTED_FIELD",
            "strategy":  "StandardRange"
        },
        {
            "range":  [
                {
                    "fixed":  "c07f17518d25aca8ab2ad66968dcbca538c24b89"
                }
            ],
            "source":  "REFERENCES_COMMIT"
        },
        {
            "original_tag":  "v10.0.5",
            "range":  [
                {
                    "fixed":  "4dbeb235f78750ade54468f877165172338584d8"
                }
            ],
            "source":  "REFERENCES_TAG"
        }
    ]
}

Affected versions

v10.*
v10.0.0
v10.0.1
v10.0.2
v10.0.3
v10.0.4
v9.*
v9.1.0
v9.1.1

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-90776.json"