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CVE-2026-28789— OliveTin: Unauthenticated DoS via concurrent map writes in OAuth2 state handling

Quick assessment

Affected
OliveTin OliveTin
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.

OliveTin是OliveTin开源的一个Web应用。 OliveTin 3000.10.3之前版本存在安全漏洞，该漏洞源于OAuth2登录流程中对共享映射的并发访问未同步，可能导致Go运行时崩溃和服务终止。

CVSS 7.5 · High EPSS 0.49% · P40
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I. Basic Information for CVE-2026-28789

Vulnerability Information
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Vulnerability Title
OliveTin: Unauthenticated DoS via concurrent map writes in OAuth2 state handling
Source: CVE Program / CVE List V5
Vulnerability Description
OliveTin gives access to predefined shell commands from a web interface. Prior to version 3000.10.3, an unauthenticated denial-of-service vulnerability exists in OliveTin’s OAuth2 login flow. Concurrent requests to /oauth/login can trigger unsynchronized access to a shared registeredStates map, causing a Go runtime panic (fatal error: concurrent map writes) and process termination. This allows remote attackers to crash the service when OAuth2 is enabled. This issue has been patched in version 3000.10.3.
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
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
Vulnerability Title
OliveTin 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
OliveTin是OliveTin开源的一个Web应用。 OliveTin 3000.10.3之前版本存在安全漏洞，该漏洞源于OAuth2登录流程中对共享映射的并发访问未同步，可能导致Go运行时崩溃和服务终止。
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 < 3000.10.3 -

II. Public POCs for CVE-2026-28789

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III. Intelligence Information for CVE-2026-28789

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Patches & Fixes for CVE-2026-28789 (1)

Vendor Advisories for CVE-2026-28789 (1)

Same Patch Batch · OliveTin · 2026-03-05 · 3 CVEs total

CVE-2026-28790 7.5 HIGH OliveTin: Unauthenticated Action Termination via KillAction When Guests Must Login
CVE-2026-28342 7.5 HIGH OliveTin: Unauthenticated Denial of Service via Memory Exhaustion in PasswordHash API Endp

IV. Related Vulnerabilities

Same product: OliveTin
Same vendor: OliveTin
Same weakness: CWE-362

V. Comments for CVE-2026-28789

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