What is CVE-2026-39904?

CVE-2026-39904 is a medium-severity vulnerability in Gophish, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 6.5/10. Published 2026-06-22.

How severe is CVE-2026-39904?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Resource exhaustion in Gophish

CVE-2026-39904

Gophish through 0.12.1 contains a denial of service vulnerability that allows authenticated users with the User role to exhaust server memory by uploading a crafted Office document as an email template attachment. The ApplyTemplate() funct…

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

Affected products

Gophish — versions 0

Weakness classification (CWE)

CWE-770 — Allocation of Resources Without Limits or Throttling

References

disclosure@vulncheck.com (technical-description, exploit)
disclosure@vulncheck.com (third-party-advisory)

Frequently asked questions

What is CVE-2026-39904?: CVE-2026-39904 is a medium-severity vulnerability in Gophish, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 6.5/10. Published 2026-06-22.
How severe is CVE-2026-39904?: Medium severity. CVSS v3 base score is 6.5 out of 10.