GitLab CE/EE Merge Request Diff View Change Hiding via Filename Input Handling
CVE-2026-6976 is a low-severity vulnerability in GitLab Community Edition and Enterprise Edition affecting all versions from 15.9 before 18.10.8, 18.11 before 18.11.5, and 19.0 before 19.0.2. Under certain conditions, improper input handling of file names in merge request diff processing allows an authenticated user with developer-role permissions to hide changes from merge request diff views. The issue affects the integrity of merge request review by causing modified content to be omitted or concealed in the diff presentation shown to reviewers.
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Impact, mitigation & remediation
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Impact
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Mitigation
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Remediation
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Exploits
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No public exploit code observed for this vulnerability.
Affected products & vendors
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Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
Recent activity
4 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Authorization bypass vulnerability in GitLab that enables attackers to hide changes from merge request diff views, undermining code review integrity.
Authorization bypass vulnerability in GitLab CE/EE Merge Request diff handling that could allow an authenticated developer to hide changes from merge request diff views.
The version that knows your environment.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.