Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2025-61926— Allstar Reviewbot has Authentication Bypass via Hard-coded Webhook Secret

Quick assessment

Affected
ossf allstar
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.

Allstar是Open Source Security Foundation开源的一安全策略软件。 Allstar 4.5之前版本存在信任管理问题漏洞，该漏洞源于Reviewbot组件使用硬编码共享密钥验证入站webhook请求，可能导致安全策略绕过。

AI Predicted 9.8 Difficulty: Easy EPSS 0.40% · P31

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2025-61926

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
Allstar Reviewbot has Authentication Bypass via Hard-coded Webhook Secret
Source: CVE Program / CVE List V5
Vulnerability Description
Allstar is a GitHub App to set and enforce security policies. In versions prior to 4.5, a vulnerability in Allstar’s Reviewbot component caused inbound webhook requests to be validated against a hard-coded, shared secret. The value used for the secret token was compiled into the Allstar binary and could not be configured at runtime. In practice, this meant that every deployment using Reviewbot would validate requests with the same secret unless the operator modified source code and rebuilt the component - an expectation that is not documented and is easy to miss. All Allstar releases prior to v4.5 that include the Reviewbot code path are affected. Deployments on v4.5 and later are not affected. Those who have not enabled or exposed the Reviewbot endpoint are not exposed to this issue.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U
Source: CVE Program / CVE List V5
Vulnerability Type
不安全的缺省变量初始化
Source: CVE Program / CVE List V5
Vulnerability Title
Allstar 信任管理问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Allstar是Open Source Security Foundation开源的一安全策略软件。 Allstar 4.5之前版本存在信任管理问题漏洞，该漏洞源于Reviewbot组件使用硬编码共享密钥验证入站webhook请求，可能导致安全策略绕过。
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
ossf allstar < 0.0.0-20250721181116-e004ecb540d6 -

II. Public POCs for CVE-2025-61926

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2025-61926

请登录查看更多情报信息。

IV. Related Vulnerabilities

Same weakness: CWE-453

V. Comments for CVE-2025-61926

No comments yet

Leave a comment