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CVE-2026-25555— OpenBullet2 0.3.2 Authentication Bypass via X-Api-Key Header

Quick assessment

Affected
openbullet openbullet2
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.

OpenBullet2是openbullet个人开发者的一个跨平台自动化测试与数据抓取工具。 OpenBullet2 0.3.2及之前版本存在安全漏洞，该漏洞源于API密钥身份验证中间件中的身份验证绕过漏洞，允许未经身份验证的攻击者通过提供空的X-Api-Key标头值获得管理员访问权限。攻击者可以利用中间件将提供的标头与空的AdminApiKey默认字符串进行比较，从而在无需有效凭据的情况下访问管理控制台和所有API端点。

CVSS 9.8 · Critical EPSS 2.73% · P86

Public Exploits 1

Nuclei · 1 CVE-2026-25555.yaml [template]

Possible ATT&CK Techniques 1 AI

T1078 · Valid Accounts

Affected Version Matrix 1

VendorProduct Version RangeStatus
openbullet openbullet2 ≤ 0.3.2 affected
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I. Basic Information for CVE-2026-25555

Vulnerability Information
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Vulnerability Title
OpenBullet2 0.3.2 Authentication Bypass via X-Api-Key Header
Source: CVE Program / CVE List V5
Vulnerability Description
OpenBullet2 through version 0.3.2 contains an authentication bypass vulnerability in the API key authentication middleware that allows unauthenticated attackers to gain admin access by supplying an empty X-Api-Key header value. Attackers can exploit the middleware's comparison of the supplied header against an empty AdminApiKey default string to access the admin console and all API endpoints without valid credentials.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
使用基本弱点进行的认证绕过
Source: CVE Program / CVE List V5
Vulnerability Title
OpenBullet2 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
OpenBullet2是openbullet个人开发者的一个跨平台自动化测试与数据抓取工具。 OpenBullet2 0.3.2及之前版本存在安全漏洞，该漏洞源于API密钥身份验证中间件中的身份验证绕过漏洞，允许未经身份验证的攻击者通过提供空的X-Api-Key标头值获得管理员访问权限。攻击者可以利用中间件将提供的标头与空的AdminApiKey默认字符串进行比较，从而在无需有效凭据的情况下访问管理控制台和所有API端点。
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
openbullet openbullet2 0 ~ 0.3.2 -

II. Public POCs for CVE-2026-25555

# POC Description Source Link Shenlong Link
1 OpenBullet2 <= 0.3.2 contains an authentication bypass caused by improper API key authentication middleware handling empty X-Api-Key header, letting unauthenticated attackers gain admin access, exploit requires sending empty X-Api-Key header. https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2026/CVE-2026-25555.yaml POC Details
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III. Intelligence Information for CVE-2026-25555

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Vendor Advisories for CVE-2026-25555 (1)

Security Blog Posts for CVE-2026-25555 (1)

Same Patch Batch · openbullet · 2026-06-08 · 5 CVEs total

CVE-2026-25855 8.8 HIGH OpenBullet2 0.3.2 Authenticated RCE via FileProxySource Script Upload
CVE-2026-25559 8.8 HIGH OpenBullet2 0.3.2 Path Traversal via Wordlist Endpoint
CVE-2026-25856 8.8 HIGH OpenBullet2 0.3.2 Authenticated RCE via Job Configuration Interface
CVE-2026-39908 6.5 MEDIUM OpenBullet2 0.3.2 NTLMv2 Hash Disclosure via UNC Path Proxy Source

IV. Related Vulnerabilities

Same product: openbullet2
Same vendor: openbullet
Same weakness: CWE-305

V. Comments for CVE-2026-25555

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