CVE-2026-82662

Exploitation

Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.

SSVC decision

• ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
• AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
• Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.19% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 8.8% of scored records. A rank, not a probability.

NVD base score

8.3 (CVSS v4.0), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

NVD analysis status

Awaiting Analysis. NVD last modified this record on 2026-09-10.

Red Hat severity

Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2026-08-31 08:46Z1 MO AGO

Last updated

2026-09-01 15:00Z1 MO AGO

Reserved

2026-08-30

Assigning CNA

VulnCheck

Record state

PUBLISHED

Severity

High (CVSS 8.3)

CNA CVSS vector

CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N

Weaknesses

• CWE-295Improper Certificate ValidationBase

Data version

5.2

Document digest

8ec891538ff7ca68429e1d7208fa98a6c2cebdd9e5d2ee83ce031e158fec4c24

• github.comGitHub Security Advisory (GHSA-r7g4-qg5f-qqm2)https://github.com/nodemailer/nodemailer/security/advisories/GHSA-r7g4-qg5f-qqm2vendor-advisory
• www.vulncheck.comVulnCheck Advisory: Nodemailer before 8.0.8 TLS Certificate Validation Bypasshttps://www.vulncheck.com/advisories/nodemailer-before-8.0.8-tls-certificate-validation-bypassthird-party-advisory