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GitLab CE/EE CVE-2026-1606

| EUVDEUVD-2026-39178 MEDIUM
Code Injection (CWE-94)
2026-06-25 cve@gitlab.com GHSA-vxf7-7c9g-m3x8
Code Injection Gitlab RCE
4.3
CVSS 3.1 · Vendor: gitlab
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Severity by source

Vendor (gitlab) PRIMARY
4.3 MEDIUM
AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
vuln.today AI
4.3 MEDIUM

Network-reachable Snippet feature requires only low-privilege authentication; impact limited to content integrity with no confidentiality or availability loss confirmed.

3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
4.0 AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N

Primary rating from Vendor (gitlab).

CVSS VectorVendor: gitlab

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
None

Lifecycle Timeline

2
Patch available
Jun 25, 2026 - 07:01 EUVD
Analysis Generated
Jun 25, 2026 - 05:33 vuln.today

DescriptionCVE.org

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 14.8 before 18.11.6, 19.0 before 19.0.3, and 19.1 before 19.1.1 that under certain conditions could have allowed an authenticated user to conceal content within a Snippet due to improper input validation.

AnalysisAI

Content injection in GitLab CE/EE via improper Snippet input validation permits authenticated low-privilege users to conceal arbitrary content within Snippets, affecting all versions from 14.8 through 19.1.0. Despite being tagged as Code Injection (CWE-94) with RCE in vendor-supplied tags, the published CVSS score of 4.3 with only low integrity impact (I:L) indicates the vendor-confirmed impact is scoped to content concealment rather than full remote code execution. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
Authenticate to GitLab instance with low-privilege account
Delivery
Access or create a Snippet in the target project
Exploit
Craft malicious input exploiting improper validation
Execution
Submit Snippet with concealed content
Persist
Victim reviews Snippet unaware of hidden content
Impact
Attacker achieves content spoofing or deceptive data injection
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Vulnerability AssessmentAI

Exploitation Exploitation requires an authenticated GitLab account with at least enough privilege to create or edit Snippets - typically a guest-level or higher role depending on instance configuration. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment Real-world risk is moderate and nuanced. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario An authenticated low-privilege GitLab user - such as a guest or reporter with Snippet creation rights - crafts a Snippet with specially structured input that exploits the improper validation to conceal malicious or misleading content from reviewers. A developer or security reviewer examining the Snippet sees only the visible portion while hidden content could be used for social engineering, smuggling configuration data, or obscuring injected code. …
Remediation The primary remediation is to upgrade to one of the vendor-released patched versions: 18.11.6, 19.0.3, or 19.1.1, as documented in the GitLab patch advisory at https://docs.gitlab.com/releases/patches/patch-release-gitlab-19-1-1-released/. … Detailed patch versions, workarounds, and compensating controls in full report.
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CVE-2026-1606 vulnerability details – vuln.today
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