CVE-2026-107272: Gophish through 0.12.1 XSS via Unescaped SMTP Server Error Messages

Severity: medium (CVSS 4.7 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-10-07 · updated 2026-10-07
Weakness: CWE-79

Description

Gophish through 0.12.1 contains stored and reflected cross-site scripting vulnerabilities that allow attackers to inject script by returning malicious SMTP server error messages. Attackers controlling or intercepting a sending profile's SMTP server can execute script when administrators view campaign results or send test emails, stealing API keys.

Affected products

gophish: through 0.12.1

References

https://blog.ostorlab.co/gophish-0121-manual-review-agentic-deep-scan.html
https://github.com/gophish/gophish
https://github.com/gophish/gophish/blob/b1648f0759c6d57ac989157c55d8b47c40254fe6/static/js/src/app/campaign_results.js#L422-L427
https://github.com/gophish/gophish/blob/b1648f0759c6d57ac989157c55d8b47c40254fe6/static/js/src/app/campaigns.js#L110-L113
https://www.vulncheck.com/advisories/gophish-through-0.12.1-xss-via-unescaped-smtp-server-error-messages

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