8.2

CVE-2026-110872: nodemailer Uncontrolled Resource Consumption

CVSS: 8.2v4.0HighAwaiting analysis
AliasesDEBIAN-CVE-2026-110872UBUNTU-CVE-2026-110872
Published 14-10-2026Last modified 15-10-2026
Open JSON

Vulnerability summary

CVE-2026-110872 is a high (CVSS 8.2) Uncontrolled Resource Consumption vulnerability in nodemailer. EPSS estimates a 0.29% chance of exploitation in the next 30 days, higher than 20.3% of scored vulnerabilities.

Overall risk
33/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.2/10
010
High · v4.0 (CVE.org)
EPSS score
0.29%
0%100%
Low · Change unavailable
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 14-10-2026
    PublishedVulnerability first disclosed.
  2. 15-10-2026
    Last modifiedVulnerability information updated.

Description

Nodemailer from 3.0.0 before 10.0.10 contains a quadratic complexity denial of service vulnerability in the SMTP client reply parser in SMTPConnection._onData and isPartialResponse. A malicious SMTP server or on-path attacker can stream continuation lines without a completion line before authentication, blocking the Node.js event loop and exhausting memory.

CVSS metrics

7 scores · 4 sources · 2 versions

EPSS trend

Probability

0.29%

Chance of exploitation in the next 30 days

Percentile

20%

Versus all other CVEs

30-day change

Change unavailable

Change unavailable

15-10-202619-10-2026
EPSS score
0.29%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Debian1 product
  • node-nodemailerAll versions (No fix recorded) | < 10.0.10+~8.0.1-1
Nodemailer1 product
Ubuntu1 product
  • node-nodemailerAll versions (No fix recorded)

3 vendors · 3 products

References

5 links