CVE-2026-123621: falha de alta gravidade em webmin usermin
Usermin through 2.570 Path Traversal File Write via detachall.cgi
Publicada em
Aviso por e-mail quando ela entrar no KEV, ganhar PoC pública ou subir de nota.
21Vexday Risk Score
Sem sinal de exploração. Nenhum artefato público de exploração conhecido até agora.
ssvc Trackcvss 8.6epss 1.0%
Usermin through 2.570 contains a path traversal vulnerability in mailbox/detachall.cgi that allows remote unauthenticated attackers to write files outside the temporary directory via unsanitized attachment filenames. Attackers can email attachments with ../ sequences in filenames, and when the recipient downloads all attachments, files like ~/.forward are overwritten, enabling command execution.
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Produtos afetados
webmin · userminCVEs relacionadas — webmin usermin
No mesmo produto, das mais perigosas para as menos.
Referências
https://github.com/webmin/userminhttps://github.com/webmin/usermin/blob/2.570/mailbox/detachall.cgi#L43-L51https://github.com/webmin/usermin/commit/cb4614e8319e0932b10533a4d5606debf5f40e14https://github.com/webmin/usermin/issues/142https://hackmd.io/@leediay/H144QKY6zlhttps://www.vulncheck.com/advisories/usermin-through-2.570-path-traversal-file-write-via-detachall-cgi