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CVE-2017-18486

HighPublished

Jitbit Helpdesk before 9.0.3 allows remote attackers to escalate privileges because of mishandling of the User/AutoLogin userHash parameter. By inspecting...

Published: Aug 9, 2019
Updated: Aug 5, 2024
Assigning CNA: mitre
Evidence observed: Aug 5, 2026

Primary CVSS

7.2/ 10High

nvd · CVSS 3.0

CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

EPSS probability estimate

3.5%

Low · next 30 days

Percentile: 88.6%
Model date: Sep 21, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

Summary

Jitbit Helpdesk before 9.0.3 allows remote attackers to escalate privileges because of mishandling of the User/AutoLogin userHash parameter. By inspecting the token value provided in a password reset link, a user can leverage a weak PRNG to recover the shared secret used by the server for remote authentication. The shared secret can be used to escalate privileges by forging new tokens for any user. These tokens can be used to automatically log in as the affected user.

Sources

JitBit_Helpdesk_Auth_BypassExploit
Utility to derive the shared secret on a JitBit Helpdesk install which can be used for authentication bypass (CVE-2017-18486)

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