CVE-2026-11827Network attack vector

Credential disclosure via repository mirroring authorization failure

Published Jul 8, 2026 · Updated Jul 8, 2026

Credential exposure in GitLab EE repository mirroring allows remote authenticated users to obtain another user's stored credentials. GitLab attributes the issue to improper authorization controls in repository mirroring but has not disclosed the affected endpoint or incorrect authorization operation. Exploitation requires Maintainer-role permissions and affects 9.5 through 18.11.6, 19.0 through 19.0.3, and 19.1 through 19.1.1; the reported consequence is credential disclosure only.

CVSS severity4.9
Medium
EPSS probability0.44%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Credential exposure in GitLab EE repository mirroring allows remote authenticated users to obtain another user's stored credentials. GitLab attributes the issue to improper authorization controls in repository mirroring but has not disclosed the affected endpoint or incorrect authorization operation. Exploitation requires Maintainer-role permissions and affects 9.5 through 18.11.6, 19.0 through 19.0.3, and 19.1 through 19.1.1; the reported consequence is credential disclosure only.

The record

CVE
CVE-2026-11827
Published
Jul 8, 2026
Updated
Jul 8, 2026
Vendor
GitLab
Product
GitLab
Classifications
CWE-522, T1555
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 8, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 8, 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?

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

  1. Affected versionversion=19.0 <19.0.4
  2. Affected versionversion=19.1 <19.1.2
  3. Affected versionversion=9.5 <18.11.7

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

GitLab · GitLabversion=19.0 <19.0.4; version=19.1 <19.1.2; version=9.5 <18.11.7

Published CVSS scores

4.9GitLab Inc.CVSS:3.1/AV:N/AC:L/PR:H/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-522Insufficiently Protected Credentials
T1555Credentials from Password Stores

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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