CVE-2026-113438 Implem Inc. CVE debrief

Who should care

System administrators and security professionals responsible for configuring and maintaining Pleasanter installations, especially those using LDAP authentication, should assess their exposure and take necessary actions to secure their systems.

Why it matters

CVE-2026-113438 is a medium-severity vulnerability in Pleasanter that could allow attackers to bypass LDAP authentication, potentially leading to unauthorized access. Defenders should verify configurations, enforce strong password policies, and monitor login attempts to mitigate this vulnerability.

• Potential unauthorized access to sensitive information.
• Bypassing of LDAP authentication mechanisms.
• Possible viewing, alteration, or deletion of information stored in the product with the privilege of the account used to log in.
• Need for verification of affected versions and configurations.

Technical summary

Pleasanter, provided by Implem Inc., is vulnerable to an LDAP authentication bypass due to improper password verification in certain configurations. An attacker could exploit this by providing a valid Login ID without a password, potentially gaining unauthorized access to sensitive information. This vulnerability could allow an attacker to bypass LDAP authentication, potentially leading to unauthorized access to sensitive information. Defenders should verify configurations, enforce strong password policies, and monitor login attempts to mitigate this vulnerability.

Defensive priority

Defenders should prioritize verifying the authenticity of login requests, especially in configurations using LDAP authentication, and ensure that all users are aware of the importance of secure password management.

Recommended defensive actions

• Verify and update Pleasanter configurations to ensure secure LDAP authentication practices.
• Enforce strong password policies for all user accounts.
• Monitor login attempts and implement additional security measures to detect and prevent unauthorized access.
• Review compensating controls for exposed systems while remediation is scheduled and verified.
• Check relevant monitoring, detection, and logs for exposed assets that need extra review.
• Track exceptions, retest remediated assets, and close the item only after evidence is documented.
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up.

Evidence notes

The CVE record and associated sources indicate that Pleasanter's LDAP authentication mechanism does not properly verify passwords under certain configurations, allowing for potential bypassing of authentication. However, specific details about the configurations or versions affected are limited.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.