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CVE-2026-15389— Inadequate access control in Sesame Time session management

Quick assessment

Affected
Sesame Time Sesame Time
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Sesame Time Sesame Time是Sesame Time公司的一款面向企业的智能考勤与人力资源管理 SaaS 平台，支持移动端、网页端和生物识别设备打卡，涵盖工时追踪、排班规划、假期管理、加班计算、薪酬集成及智能办公等功能，帮助企业简化员工管理并确保合规。 Sesame Time存在授权问题漏洞，该漏洞源于会话管理访问控制不足，系统使用会话标识符（USID）作为唯一验证机制且未验证其合法性，可能导致攻击者冒充受害者会话访问机密信息，包括电子邮件、用户ID、角色和企业数据。

AI Predicted 8.6 Difficulty: Easy EPSS 0.44% · P37

Affected Version Matrix 1

VendorProduct Version RangeStatus
Sesame Time Sesame Time < * affected
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I. Basic Information for CVE-2026-15389

Vulnerability Information
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Vulnerability Title
Inadequate access control in Sesame Time session management
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability relating to insufficient access control has been identified in the session management of the Sesame Time web application and its REST v3 API. The flaw lies in the fact that the system uses the session identifier (USID) as the sole validation mechanism, without verifying whether that identifier legitimately belongs to the user making the request. As a result, an attacker who obtains a valid USID can impersonate a victim’s session and access their confidential information, including emails, user IDs, roles and corporate data. This vulnerability is exacerbated by poor session lifecycle management: new logins generate additional USIDs without revoking the previous ones, allowing multiple active sessions to coexist and thereby expanding the attack surface.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
通过用户控制密钥绕过授权机制
Source: CVE Program / CVE List V5
Vulnerability Title
Sesame Time 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Sesame Time Sesame Time是Sesame Time公司的一款面向企业的智能考勤与人力资源管理 SaaS 平台，支持移动端、网页端和生物识别设备打卡，涵盖工时追踪、排班规划、假期管理、加班计算、薪酬集成及智能办公等功能，帮助企业简化员工管理并确保合规。 Sesame Time存在授权问题漏洞，该漏洞源于会话管理访问控制不足，系统使用会话标识符（USID）作为唯一验证机制且未验证其合法性，可能导致攻击者冒充受害者会话访问机密信息，包括电子邮件、用户ID、角色和企业数据。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Sesame Time Sesame Time 0 ~ * -

II. Public POCs for CVE-2026-15389

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III. Intelligence Information for CVE-2026-15389

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Vendor Advisories for CVE-2026-15389 (1)

IV. Related Vulnerabilities

Same weakness: CWE-639

V. Comments for CVE-2026-15389

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