Vulnerability in Go Standard Library Net/mail

CVE-2025-61725

The ParseAddress function constructs domain-literal address components through repeated string concatenation. When parsing large domain-literal components, this can cause excessive CPU consumption.

Published · last modified .

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.006 (49.2th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 49th percentile — 49.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2025-61725: held from 0.006 to 0.006.

EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: +0.000

Affected products

References

Frequently asked questions

What is CVE-2025-61725?
CVE-2025-61725 is a high-severity vulnerability in Go Standard Library Net/mail, classified under CWE-407: INEFFICIENT ALGORITHMIC COMPLEXITY. CVSS score: 7.5/10. Published 2025-10-29.
How severe is CVE-2025-61725?
High severity. CVSS v3 base score is 7.5 out of 10.