Private email disclosure via unredacted webhook payloads
Published Jan 27, 2023 · Updated Mar 27, 2025
Information disclosure in GitLab EE allows remote authenticated users to obtain private email addresses through group webhook payloads. The group webhook payload builder serializes an added or removed user's hidden primary email without applying private-email redaction. Exploitation requires authenticated access and delivery of a membership event to an attacker-accessible webhook; the disclosure is limited to affected users' email addresses.
Summary
What happened
Information disclosure in GitLab EE allows remote authenticated users to obtain private email addresses through group webhook payloads. The group webhook payload builder serializes an added or removed user's hidden primary email without applying private-email redaction. Exploitation requires authenticated access and delivery of a membership event to an attacker-accessible webhook; the disclosure is limited to affected users' email addresses.
The record
- CVE
- CVE-2022-4255
- Published
- Jan 27, 2023
- Updated
- Mar 27, 2025
- Vendor
- GitLab
- Product
- GitLab
- Classifications
- T1087
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Jan 27, 2023CVE publishedPublication date reported by the CVE source.
- Mar 27, 2025Record 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=>=13.7, <15.4.6
- Affected versionversion=>=15.5, <15.5.5
- Affected versionversion=>=15.6, <15.6.1
What conditions does exploitation require?
What is affected?
Published CVSS scores
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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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