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Advisories

Dixell/Copeland XWEB EVO Authentication Bypass via users.lua

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Severity
high
Date
Affecting

  • XWEB EVO >= 5.6.2, <= 5.8.8

CWE
  • CWE-306 Missing Authentication for Critical Function
CVSS
8.2
CVSS V4 Vector
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
Credit
Valentin Lobstein (Chocapikk)
Description
XWEB EVO 5.6.2 through 5.8.8 contains an authentication bypass vulnerability that allows unauthenticated attackers to set the password of any account flagged must-reset-at-next-login by exploiting missing session validation in the users.lua update_password action. Attackers can reset the password of newly onboarded operator accounts, clearing the password_expiration flag and gaining an immediately usable authenticated foothold on the system. This product line reached it's end of service date in March 2026.

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