CVE-2023-1210Public exploitNetwork attack vector

Email address disclosure via group invitation error

Published Aug 1, 2023 · Updated Nov 20, 2025

Information disclosure in GitLab allows remote authenticated users to obtain an unverified user's email through a group invitation error. The email_not_verified method in ee/app/models/ee/member.rb formats user.email directly into an error returned when a restricted-domain group rejects an invited, unverified account. Exploitation requires a Premium or Enterprise group with restricted membership domains, group invitation rights, and an account awaiting email confirmation; the result is disclosure of that account's email address.

CVSS severity3.1
Low
EPSS probability0.60%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in GitLab allows remote authenticated users to obtain an unverified user's email through a group invitation error. The email_not_verified method in ee/app/models/ee/member.rb formats user.email directly into an error returned when a restricted-domain group rejects an invited, unverified account. Exploitation requires a Premium or Enterprise group with restricted membership domains, group invitation rights, and an account awaiting email confirmation; the result is disclosure of that account's email address.

The record

CVE
CVE-2023-1210
Published
Aug 1, 2023
Updated
Nov 20, 2025
Vendor
GitLab
Product
GitLab
Classifications
CWE-209, T1087
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 1, 2023CVE publishedPublication date reported by the CVE source.
  2. Nov 20, 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?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=12.9 <16.0.8
  2. Affected versionversion=16.1.0 <16.1.3
  3. Affected versionversion=16.2.0 <16.2.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

GitLab · GitLabversion=12.9 <16.0.8; version=16.1.0 <16.1.3; version=16.2.0 <16.2.2

Published CVSS scores

4.3NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
3.1GitLab Inc.CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-209Generation of Error Message Containing Sensitive Information
T1087Account Discovery

Public exploit references

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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