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CVE-2026-67437— OliveTin: Unauthenticated DoS via OAuth2 State Memory Exhaustion (Unbounded Map Growth)

Quick assessment

Affected
OliveTin OliveTin
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

OliveTin是OliveTin团队开源的一个Web应用。 OliveTin 3000.0.0版本至3000.17.0之前版本存在资源管理错误漏洞，该漏洞源于OAuth2登录处理器在每次/oauth/login请求时存储每个登录状态于registeredStates映射中，未过期、删除或限制条目，导致未经过身份验证的攻击者耗尽内存并造成拒绝服务。

CVSS 7.5 · High EPSS 0.64% · P48

Affected Version Matrix 1

VendorProduct Version RangeStatus
OliveTin OliveTin >= 3000.0.0, < 3000.17.0 affected
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I. Basic Information for CVE-2026-67437

Vulnerability Information
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Vulnerability Title
OliveTin: Unauthenticated DoS via OAuth2 State Memory Exhaustion (Unbounded Map Growth)
Source: CVE Program / CVE List V5
Vulnerability Description
OliveTin gives access to predefined shell commands from a web interface. From 3000.0.0 until 3000.17.0, the service/internal/auth/otoauth2/restapi_auth_oauth2.go OAuth2 login handler stores per-login state in the registeredStates map on every /oauth/login request without expiring, deleting, or bounding entries, allowing an unauthenticated attacker to exhaust memory and cause a denial of service. This issue is fixed in version 3000.17.0.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
未加控制的资源消耗(资源穷尽)
Source: CVE Program / CVE List V5
Vulnerability Title
OliveTin 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
OliveTin是OliveTin团队开源的一个Web应用。 OliveTin 3000.0.0版本至3000.17.0之前版本存在资源管理错误漏洞，该漏洞源于OAuth2登录处理器在每次/oauth/login请求时存储每个登录状态于registeredStates映射中，未过期、删除或限制条目，导致未经过身份验证的攻击者耗尽内存并造成拒绝服务。
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
OliveTin OliveTin >= 3000.0.0, < 3000.17.0 -

II. Public POCs for CVE-2026-67437

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 7781 chars
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III. Intelligence Information for CVE-2026-67437

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Patches & Fixes for CVE-2026-67437 (1)

Vendor Advisories for CVE-2026-67437 (1)

Vendor Pages for CVE-2026-67437 (1)

Same Patch Batch · OliveTin · 2026-07-29 · 3 CVEs total

CVE-2026-67438 6.6 MEDIUM OliveTin OS Command Injection via Custom regex: Argument Type Bypassing Shell Safety Check
CVE-2026-67439 4.3 MEDIUM OliveTin: StartActionAndWait Endpoints Bypass `logs` Permission and Return Action Output

IV. Related Vulnerabilities

Same product: OliveTin
Same vendor: OliveTin
Same weakness: CWE-400

V. Comments for CVE-2026-67437

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