CVE-2026-4524Network attack vector

Confidential issue disclosure via improper authorization

Published May 14, 2026 · Updated May 14, 2026

Improper authorization in affected GitLab CE/EE releases allows remote authenticated users to read confidential issue content. GitLab attributes the exposure to improper authorization checks but has not disclosed the affected endpoint, request path, or code locus. Any authenticated account can reach the flaw in a public project in 18.9.1 through 18.9.6, 18.10 through 18.10.5, or 18.11 through 18.11.2 and read content reserved for authorized project members.

CVSS severity6.5
Medium
EPSS probability0.29%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper authorization in affected GitLab CE/EE releases allows remote authenticated users to read confidential issue content. GitLab attributes the exposure to improper authorization checks but has not disclosed the affected endpoint, request path, or code locus. Any authenticated account can reach the flaw in a public project in 18.9.1 through 18.9.6, 18.10 through 18.10.5, or 18.11 through 18.11.2 and read content reserved for authorized project members.

The record

CVE
CVE-2026-4524
Published
May 14, 2026
Updated
May 14, 2026
Vendor
GitLab
Product
GitLab
Classifications
CWE-288, T1213.003
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. May 14, 2026CVE publishedPublication date reported by the CVE source.
  2. May 14, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=18.10 <18.10.6
  2. Affected versionversion=18.11 <18.11.3
  3. Affected versionversion=18.9.1 <18.9.7

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

GitLab · GitLabversion=18.10 <18.10.6; version=18.11 <18.11.3; version=18.9.1 <18.9.7

Published CVSS scores

6.5GitLab Inc.CVSS:3.1/AV:N/AC:L/PR:L/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.

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 exploitUnconfirmed

Weakness, pattern, technique

CWE-288Authentication Bypass Using an Alternate Path or Channel
T1213.003Data from Information Repositories: Code Repositories

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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