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CVE-2026-107828— Jivejdon through 5.0 Predictable Passwords via Sina Weibo OAuth Login

Quick assessment

Affected
banq jivejdon
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.

Jivejdon 5.0 及更早版本存在一个身份验证绕过漏洞，攻击者无需认证即可访问通过微博创建的账户。该漏洞的原因在于，攻击者能够根据公开的微博用户 ID 推导出可预测的凭据。具体而言， 方法将用户密码设置为微博 ID 的前四位，这使得攻击者可以通过普通的表单登录方式登录，并以受害者的身份读取或发布内容。

CVSS 6.5 · Medium

Possible ATT&CK Techniques 1 AI

T1078 · Valid Accounts
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I. Basic Information for CVE-2026-107828

Vulnerability Information
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Vulnerability Title
Jivejdon through 5.0 Predictable Passwords via Sina Weibo OAuth Login
Source: CVE Program / CVE List V5
Vulnerability Description
Jivejdon through 5.0 contains an authentication bypass vulnerability that allows unauthenticated attackers to access Weibo-created accounts by deriving predictable credentials from public Weibo user IDs. OAuthAccountServiceImp.transferSina() sets the password to the first four digits of the Weibo ID, letting attackers log in through normal form login to read or post as victims.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
CWE-1391
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
banq jivejdon 0 ~ 5.0 -

II. Public POCs for CVE-2026-107828

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III. Intelligence Information for CVE-2026-107828

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Other References for CVE-2026-107828 (3)

Same Patch Batch · banq · 2026-10-08 · 13 CVEs total

CVE-2026-107797 6.1 MEDIUM Jivejdon through 5.0 Reflected XSS via postThread.jsp to and tag Parameters
CVE-2026-107796 6.1 MEDIUM Jivejdon through commit ee67a65e Reflected XSS via taggedThreadList.jsp tagID and count Pa
CVE-2026-107829 5.9 MEDIUM Jivejdon through 5.0 Unsalted MD5 Password Storage via AccountDaoSql
CVE-2026-107800 5.4 MEDIUM Jivejdon through 5.0 Stored XSS via Private Short Messages
CVE-2026-107798 5.4 MEDIUM Jivejdon through commit ee67a65e Stored XSS via Markdown Links in TextStyle Rendering Filt
CVE-2026-107801 5.4 MEDIUM Jivejdon through 5.0 Stored XSS via Attachment Upload Content-Type
CVE-2026-107799 5.4 MEDIUM Jivejdon through 5.0 Stored XSS via messageListBody.jsp Forum Message Rendering
CVE-2026-107830 5.3 MEDIUM Jivejdon through commit ee67a65e Missing Rate Limiting via /account/smsVRAction SMS Endpoi
CVE-2025-71428 4.9 MEDIUM Jivejdon through 5.0 SQL Injection via username in userListAction
CVE-2026-107793 4.3 MEDIUM Jivejdon through 5.0 IDOR via subSaveAction Subscription Delete
CVE-2026-107792 4.3 MEDIUM Jivejdon through commit ee67a65e Missing Authorization via /message/threadToForum/save Thr
CVE-2026-107831 4.3 MEDIUM Jivejdon through 5.0 CSRF via GET-based Account and Thread Actions

IV. Related Vulnerabilities

Same product: jivejdon
Same vendor: banq
Same weakness: CWE-1391

V. Comments for CVE-2026-107828

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