Session token theft via unvalidated OAuth state
Published Jun 8, 2026 · Updated Jun 8, 2026
Open redirect in JEECG JeecgBoot 3.9.0 through 3.9.2 allows remote attackers to send victims to attacker-chosen sites via OAuth links. ThirdLoginController accepts the OAuth state parameter without validation, appends a generated JWT after callback authentication, and passes the resulting URL to HttpServletResponse.sendRedirect. Exploitation requires the optional third-party login feature and a victim who actively follows the crafted link and completes OAuth login, exposing that victim's session token to the redirect destination.
Summary
What happened
Open redirect in JEECG JeecgBoot 3.9.0 through 3.9.2 allows remote attackers to send victims to attacker-chosen sites via OAuth links. ThirdLoginController accepts the OAuth state parameter without validation, appends a generated JWT after callback authentication, and passes the resulting URL to HttpServletResponse.sendRedirect. Exploitation requires the optional third-party login feature and a victim who actively follows the crafted link and completes OAuth login, exposing that victim's session token to the redirect destination.
The record
- CVE
- CVE-2026-11502
- Published
- Jun 8, 2026
- Updated
- Jun 8, 2026
- Vendor
- Beijing Guoju Information Technology Co., Ltd.
- Product
- JeecgBoot
- Classifications
- CWE-601, T1566.002
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jun 8, 2026CVE publishedPublication date reported by the CVE source.
- Jun 8, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=3.9.0
- Affected versionversion=3.9.1
- Affected versionversion=3.9.2
What conditions does exploitation require?
What is affected?
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
- OAuth2 open-redirect proof of conceptproof of concept · demonstrated
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
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Your stack
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