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CVE-2026-82043— UTMStack < 11.2.16 Account Enumeration via Password Reset Endpoint

Quick assessment

Affected
UTMStack UTMStack
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 UTMStack 11.2.16 版本之前存在一个账户枚举漏洞，攻击者无需认证即可通过观察对 端点发送请求时返回的不同 HTTP 响应，来确定已注册的电子邮件地址。攻击者可以提交任意的电子邮件地址，并根据响应区分已注册和未注册的账户：已注册的账户会返回 200 OK 响应，而未注册的账户则会触发 500 Internal Server Error 错误，并返回后端错误详情。这一机制使得攻击者能够针对特定用户实施钓鱼攻击或凭证窃取攻击。

CVSS 5.3 · Medium EPSS 0.25% · P14

Affected Version Matrix 1

VendorProduct Version RangeStatus
UTMStack UTMStack < 11.2.16 affected
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I. Basic Information for CVE-2026-82043

Vulnerability Information
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Vulnerability Title
UTMStack < 11.2.16 Account Enumeration via Password Reset Endpoint
Source: CVE Program / CVE List V5
Vulnerability Description
UTMStack before 11.2.16 contains an account enumeration vulnerability that allows unauthenticated attackers to determine registered email addresses by observing differing HTTP responses from the POST /api/account/reset-password/init endpoint. Attackers can submit arbitrary email addresses and distinguish registered accounts, which return 200 OK, from unregistered accounts, which trigger a 500 Internal Server Error with backend error details, enabling targeted phishing or credential attacks.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
响应差异性信息暴露
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
UTMStack UTMStack 0 ~ 11.2.16 -

II. Public POCs for CVE-2026-82043

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III. Intelligence Information for CVE-2026-82043

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Vendor Advisories for CVE-2026-82043 (1)

Vendor Pages for CVE-2026-82043 (1)

Same Patch Batch · UTMStack · 2026-10-02 · 7 CVEs total

CVE-2026-82041 9.9 CRITICAL UTMStack < 11.2.16 Missing Authorization via Command WebSocket
CVE-2026-82042 9.8 CRITICAL UTMStack < 11.2.16 Authentication Bypass via InternalApiKeyFilter
CVE-2026-82039 8.8 HIGH UTMStack < 11.2.16 SQL Injection via searchGroupsByFilter
CVE-2026-82044 7.7 HIGH UTMStack < 11.2.16 Server-Side Request Forgery via downloadPdf
CVE-2026-82045 6.5 MEDIUM UTMStack < 11.2.16 JPQL Injection via searchPropertyValues
CVE-2026-82040 5.0 MEDIUM UTMStack < 11.2.16 SSRF via IdentityProviderService

IV. Related Vulnerabilities

Same product: UTMStack
Same vendor: UTMStack
Same weakness: CWE-204

V. Comments for CVE-2026-82043

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