Pleasanter CVE-2026-113438 Allows Login Without Password Under Specific LDAP Setups
A vulnerability tracked as CVE-2026-113438 has been reported in Pleasanter, affecting versions 1.1.0.0 through 1.5.9.0. Under certain LDAP configurations, crafted requests sent to the login endpoint can authenticate as a valid user without password verification. An attacker only needs a valid login ID, and the attack requires no user interaction and can be carried out over the network. Successful exploitation could let attackers view, alter, or delete business data within the compromised user's privileges. The vendor has released version 1.5.9.1 to address the issue, and organizations are advised to update or check whether their configuration is affected.
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