CVE-2026-61503

Rejetto HFS < 3.2.1 Username Enumeration via Login Response Differences

CVSS 6.9 MEDIUMCWE-204

Vexday Risk Score

10Baixo

Decisão SSVC (CISA)

Track

Sem sinal de exploração → monitorar

CVSS 6.9EPSS —KEV nãoPoC —Nuclei —Metasploit —Patch referenciado

Ciclo de vida

13 jul 2026Publicada no NVD

Recomendação: Monitorar — sem sinal de exploração no momento.

Rejetto HFS 3.0.0 through 3.2.0 returns observably different responses from its login endpoint depending on whether the submitted username exists. A remote unauthenticated attacker can use this to confirm valid account names, including the default admin account, facilitating password-guessing and session-forgery attacks.

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

Produtos afetados

rejetto · hfs

Referências

https://github.com/rejetto/hfs/releases/tag/v3.2.1 https://www.vulncheck.com/advisories/rejetto-hfs-username-enumeration-via-login-response-differences