Reference page — cumulative record through Monday, October 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
CVE-2026-39904
Gophish 0.12.1 Denial of Service via Office Document Upload
AV AC AT PR UI VC VI VA CVSS EPSS %ile KEV
N L N L N N N H 7.1 .0044 36.4 —
AFFECTED
Product Versions Fixed
gophish unspecified —
TIMELINE
Apr 7 Reserved by VulnCheck
Jun 22 Published (CNA: VulnCheck)
Oct 8 EXPLOIT PUBLISHED — CVE-2026-39904 (gophish). Public exploit reference added.
Description
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() function in models/attachment.go processes Office documents as ZIP archives and calls ioutil.ReadAll() on each contained file entry without enforcing size restrictions on uncompressed content, allowing a zip bomb payload to expand to several gigabytes in memory and cause the process to be terminated by the operating system.
Lifecycle
Complete event history — 3 events, chronological
| Date | Event | Detail |
| April 7, 2026 | Reserved | Reserved by VulnCheck |
| June 22, 2026 | Published | Published (CNA: VulnCheck) |
| October 8, 2026 | EXPLOIT PUBLISHED | EXPLOIT PUBLISHED — CVE-2026-39904 (gophish). Public exploit reference added. |
Affected
Affected products and packages — 1 row
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
| gophish | gophish | — | — | — |
About this page
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-39904 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Monday, October 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.