OAuth token theft via attacker-controlled callback
Published Sep 16, 2026 · Updated Sep 16, 2026
OAuth flow hijacking in Jenkins Bitbucket Server Integration Plugin 6.0.1 and earlier allows remote attackers to obtain a victim's access token. The authorization endpoint trusts the submitted oauth_callback URL instead of the callback bound to the server-side request token, redirecting the completed flow and token to an attacker-chosen destination. Exploitation requires a victim to authorize the attacker's crafted OAuth request, after which the token grants the victim's Jenkins privileges.
Summary
What happened
OAuth flow hijacking in Jenkins Bitbucket Server Integration Plugin 6.0.1 and earlier allows remote attackers to obtain a victim's access token. The authorization endpoint trusts the submitted oauth_callback URL instead of the callback bound to the server-side request token, redirecting the completed flow and token to an attacker-chosen destination. Exploitation requires a victim to authorize the attacker's crafted OAuth request, after which the token grants the victim's Jenkins privileges.
The record
- CVE
- CVE-2026-92138
- Published
- Sep 16, 2026
- Updated
- Sep 16, 2026
- Vendor
- Jenkins Project
- Product
- Bitbucket Server Integration
- Classifications
- T1528
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Sep 16, 2026CVE publishedPublication date reported by the CVE source.
- Sep 16, 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?
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- Affected versionversion=0 <=6.0.1
What conditions does exploitation require?
What is affected?
Published CVSS scores
No CVSS assessment is available in this record.
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
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Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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