CVE-2018-17455Network attack vector

Information disclosure via merge approval IDOR

Published Apr 15, 2023 · Updated Feb 6, 2025

Authorization bypass in affected GitLab Enterprise Edition releases allows remote attackers to read private group metadata. The merge request approvals feature resolves attacker-controlled group references without enforcing authorization, exposing names, avatars, LDAP settings, and descriptions. No account or user interaction is required; the disclosure is limited to group metadata, with no reported data modification or service interruption.

CVSS severity7.5
High
EPSS probability0.62%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authorization bypass in affected GitLab Enterprise Edition releases allows remote attackers to read private group metadata. The merge request approvals feature resolves attacker-controlled group references without enforcing authorization, exposing names, avatars, LDAP settings, and descriptions. No account or user interaction is required; the disclosure is limited to group metadata, with no reported data modification or service interruption.

The record

CVE
CVE-2018-17455
Published
Apr 15, 2023
Updated
Feb 6, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-639
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 15, 2023CVE publishedPublication date reported by the CVE source.
  2. Feb 6, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/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.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-639Authorization Bypass Through User-Controlled Key

Public exploit references

No public exploit references are available in this record.

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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