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Attacker Value
Unknown

CVE-2021-42329

Disclosure Date: October 15, 2021 (last updated February 23, 2025)
The “List_Add” function of message board of ShinHer StudyOnline System does not filter special characters in the title parameter. After logging in with user’s privilege, remote attackers can inject JavaScript and execute stored XSS attacks.
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Attacker Value
Unknown

CVE-2021-42331

Disclosure Date: October 15, 2021 (last updated February 23, 2025)
The “Study Edit” function of ShinHer StudyOnline System does not perform permission control. After logging in with user’s privilege, remote attackers can access and edit other users’ tutorial schedule by crafting URL parameters.
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Attacker Value
Unknown

CVE-2021-42332

Disclosure Date: October 15, 2021 (last updated February 23, 2025)
The “List View” function of ShinHer StudyOnline System is not under authority control. After logging in with user’s privilege, remote attackers can access the content of other users’ message boards by crafting URL parameters.
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Attacker Value
Unknown

CVE-2021-42330

Disclosure Date: October 15, 2021 (last updated February 23, 2025)
The “Teacher Edit” function of ShinHer StudyOnline System does not perform authority control. After logging in with user’s privilege, remote attackers can access and edit other users’ credential and personal information by crafting URL parameters.
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