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CVE-2026-111933— Coder before 2.34.2 User Enumeration via Login Placeholder Hash

Quick assessment

Affected
coder coder
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.

Coder 2.29.17 之前的版本、2.30.0 至 2.32.7 之间的版本、2.33.0 至 2.33.8 之间的版本，以及 2.34.0 至 2.34.2 之间的版本存在用户枚举漏洞。该漏洞源于 函数在检测到存储的密码哈希为空时，会将其替换为基于字符串 "hunter2" 生成的占位符哈希。未认证的攻击者可尝试使用密码 "hunter2" 进行登录，并通过区分 HTTP 403 与 401 响应来枚举有效账户，从而泄露仅支持单点登录（SSO）用户的认证提供商信息。

CVSS 3.7 · Low

Affected Version Matrix 8

VendorProduct Version RangeStatus
coder coder 2.34.0< 2.34.2 affected
2.34.2 unaffected
2.33.0< 2.33.8 affected
2.33.8 unaffected
2.30.0< 2.32.7 affected
2.32.7 unaffected
< 2.29.17 affected
2.29.17 unaffected
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I. Basic Information for CVE-2026-111933

Vulnerability Information
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Vulnerability Title
Coder before 2.34.2 User Enumeration via Login Placeholder Hash
Source: CVE Program / CVE List V5
Vulnerability Description
Coder before 2.29.17, 2.30.0 before 2.32.7, 2.33.0 before 2.33.8, and 2.34.0 before 2.34.2 contains a user enumeration vulnerability because userpassword.Compare() substitutes a placeholder hash derived from the string "hunter2" when a stored password hash is empty. Unauthenticated attackers can submit logins with the password "hunter2" and distinguish HTTP 403 from 401 responses to enumerate valid accounts and reveal the authentication provider of SSO-only users.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
通过差异性导致的信息暴露
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
coder coder 2.34.0 ~ 2.34.2 -
coder coder 2.33.0 ~ 2.33.8 -
coder coder 2.30.0 ~ 2.32.7 -
coder coder 0 ~ 2.29.17 -

II. Public POCs for CVE-2026-111933

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2026-111933

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Vendor Advisories for CVE-2026-111933 (2)

Same Patch Batch · coder · 2026-10-17 · 11 CVEs total

CVE-2026-111927 7.7 HIGH Coder before 2.35.4 Credential Theft via Workspace Proxy Hostname Prefix Match
CVE-2026-111928 5.4 MEDIUM Coder 2.0.0 before 2.34.8 Authorization Bypass via User-Level ACL in RBAC Policy
CVE-2026-111929 5.3 MEDIUM Coder 2.30.0 before 2.34.8 Cross-Organization File Disclosure via DownloadFile RPC
CVE-2024-58398 4.3 MEDIUM Coder 2.3.1 before 2.16.1 Open Redirect via Login Page redirect Parameter
CVE-2026-111930 4.3 MEDIUM Coder from 2.26.0 before 2.34.8 Information Disclosure via Workspace ACL Endpoint
CVE-2026-111931 4.3 MEDIUM Coder 2.0.0 before 2.34.8 Open Redirect via Workspace App Proxy
CVE-2025-71435 4.2 MEDIUM Coder before 2.23.0 Session Expiration Bypass via OIDC Without Refresh Token
CVE-2026-111934 3.7 LOW Coder before 2.34.7 IP Spoofing via X-Forwarded-For Header
CVE-2026-111932 3.4 LOW Coder before 2.34.2 Stored HTML Injection via Appearance Settings
CVE-2026-111926 3.3 LOW Coder from 2.10.0 before 2.34.8 Information Disclosure via Agent /debug/manifest

IV. Related Vulnerabilities

Same product: coder
Same vendor: coder
Same weakness: CWE-203

V. Comments for CVE-2026-111933

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