What’s Vulnerable › Vulnerabilities

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

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-08 · updated 2026-10-09
• Weakness: CWE-1391

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.

Affected products

• banq jivejdon: through 5.0

References

• https://github.com/banq/jivejdon
• https://github.com/banq/jivejdon/blob/ee67a65e65228644a71c8317d7e34deea50f95ef/src/main/java/com/jdon/jivejdon/api/impl/account/OAuthAccountServiceImp.java#L192-L213
• https://github.com/banq/jivejdon/blob/ee67a65e65228644a71c8317d7e34deea50f95ef/src/main/java/com/jdon/jivejdon/presentation/action/account/oauth/SinaUserCallBackAction.java#L76-L80
• https://github.com/banq/jivejdon/issues/28
• https://www.vulncheck.com/advisories/jivejdon-through-5.0-predictable-passwords-via-sina-weibo-oauth-login

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