Vulnerability · Published Oct 7, 2026 · Assigned by VulnCheck
CVE-2026-107269Gophish through 0.12.1 Username Enumeration via POST /login Timing Discrepancy
Low 3.7
In plain English
A low-severity security flaw in gophish from gophish. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 15% of all known vulnerabilities).
Severity (CVSS 3.1)3.7Low
Exploit odds (30 days)0.2%top 84.5% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
Gophish through 0.12.1 contains a timing discrepancy vulnerability in AdminServer.Login that allows unauthenticated attackers to enumerate valid usernames by measuring login response times. Attackers can submit candidate usernames to POST /login and detect bcrypt comparison delays for existing accounts, narrowing targets for password guessing or credential stuffing.
Affected products (as reported)
Weakness: CWE-208 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
References
- Researcher Disclosure technical-description, exploit
- https://github.com/gophish/gophish/blob/b1648f0759c6d57ac989157c55d8b47c40254fe6/controllers/route.go#L375-L390 technical-description
- https://github.com/gophish/gophish product
- VulnCheck Advisory: Gophish through 0.12.1 Username Enumeration via POST /login Timing Discrepancy third-party-advisory