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CVE-2026-105140— Obot 0.25.0 before 0.25.6 and 0.26.0 before 0.26.1 Race Condition Restores Revoked Group Membership

Quick assessment

Affected
obot-platform obot
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.

在 Obot 0.25.0 至 0.25.6（不含 0.25.6）以及 0.26.0 至 0.26.1（不含 0.26.1）版本中，认证提供程序（auth provider）的用户组刷新操作存在竞态条件漏洞。该漏洞可能导致已在身份提供程序中被撤销的组 memberships（组成员资格）被重新恢复。 当对同一用户触发的多个组刷新操作并发执行且提交顺序错乱时，过期的组成员资格信息可能被持久化保存，导致用户在被撤销组权限后，仍能保留相关的基于组的访问权限，持续时间约为十分钟。

CVSS 4.2 · Medium
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I. Basic Information for CVE-2026-105140

Vulnerability Information
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Vulnerability Title
Obot 0.25.0 before 0.25.6 and 0.26.0 before 0.26.1 Race Condition Restores Revoked Group Membership
Source: CVE Program / CVE List V5
Vulnerability Description
Obot 0.25.0 before 0.25.6 and 0.26.0 before 0.26.1 contains a race condition in auth provider group refreshes that can restore group memberships just revoked in the identity provider. When overlapping refreshes for the same user commit out of order, stale memberships are persisted and the user retains revoked group-based access for about ten minutes.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
使用共享资源的并发执行不恰当同步问题(竞争条件)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
obot-platform obot 0.25.0 ~ 0.25.6 -

II. Public POCs for CVE-2026-105140

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III. Intelligence Information for CVE-2026-105140

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Other References for CVE-2026-105140 (9)

Same Patch Batch · obot-platform · 2026-10-07 · 3 CVEs total

CVE-2026-105138 6.5 MEDIUM Obot 0.12.0 before 0.26.2 Credential Exposure via MCP Catalog Entry API
CVE-2026-105139 4.3 MEDIUM Obot 0.26.0 before 0.26.2 Authorization Bypass via vMCP Profile Prompts and Resources

IV. Related Vulnerabilities

Same product: obot
Same vendor: obot-platform
Same weakness: CWE-362

V. Comments for CVE-2026-105140

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