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CVE-2026-90562— LangBot before 4.10.11 Authentication Bypass via Weak Recovery Key

Quick assessment

Affected
langbot-app LangBot
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.

LangBot HQ LangBot是LangBot HQ组织的一款人工智能对话助手。 LangBot HQ LangBot 4.10.11之前版本存在加密问题漏洞，该漏洞源于密码恢复密钥仅具有24位熵且未对未经验证的密码重置端点进行速率限制，远程攻击者在知晓管理员邮箱的情况下可通过并发请求穷举密钥空间重置管理员密码并获取账户访问权限。

CVSS 8.1 · High EPSS 0.73% · P55

Possible ATT&CK Techniques 1 AI

T1568 · Dynamic Resolution

Affected Version Matrix 1

VendorProduct Version RangeStatus
langbot-app LangBot 4.0.8.1< 4.10.11 affected
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I. Basic Information for CVE-2026-90562

Vulnerability Information
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Vulnerability Title
LangBot before 4.10.11 Authentication Bypass via Weak Recovery Key
Source: CVE Program / CVE List V5
Vulnerability Description
LangBot before 4.10.11 generates password recovery keys with only 24 bits of entropy and applies no rate limiting to the unauthenticated reset-password endpoint. Remote attackers knowing the administrator email can exhaust the keyspace through concurrent requests to reset the admin password and gain account access.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
信息熵不充分
Source: CVE Program / CVE List V5
Vulnerability Title
LangBot HQ LangBot 加密问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
LangBot HQ LangBot是LangBot HQ组织的一款人工智能对话助手。 LangBot HQ LangBot 4.10.11之前版本存在加密问题漏洞，该漏洞源于密码恢复密钥仅具有24位熵且未对未经验证的密码重置端点进行速率限制，远程攻击者在知晓管理员邮箱的情况下可通过并发请求穷举密钥空间重置管理员密码并获取账户访问权限。
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
langbot-app LangBot 4.0.8.1 ~ 4.10.11 -

II. Public POCs for CVE-2026-90562

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III. Intelligence Information for CVE-2026-90562

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Patches & Fixes for CVE-2026-90562 (1)

Vendor Advisories for CVE-2026-90562 (1)

Proof of Concept for CVE-2026-90562 (1)

Other References for CVE-2026-90562 (2)

IV. Related Vulnerabilities

Same product: LangBot
Same vendor: langbot-app
Same weakness: CWE-331