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CVE-2026-6073 is a high-severity cross-site scripting vulnerability in GitLab Enterprise Edition affecting Duo Agent output rendering. The flaw is caused by improper input sanitization of Duo Agent-generated content before it is rendered in the browser, allowing an authenticated attacker to inject arbitrary JavaScript into content that will later be viewed by other users. Affected versions are GitLab EE 18.7 before 18.9.7, 18.10 before 18.10.6, and 18.11 before 18.11.3. The vulnerable functionality was introduced in the 18.7 release line. When a victim views the maliciously crafted Duo Agent output, the injected script executes in the victim's browser context.
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A high-severity cross-site scripting vulnerability in GitLab Duo Agent output rendering.
A GitLab sanitization vulnerability affecting Duo Agent or AI output rendering that could enable cross-site scripting.
An improper input sanitization vulnerability in GitLab EE that could allow an authenticated user to execute arbitrary JavaScript in other users' browsers.
A high-severity cross-site scripting vulnerability in GitLab Enterprise Edition Duo Agent output rendering that allows an authenticated attacker to inject arbitrary JavaScript executed in other users' browsers.
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Cross-references every affected SKU, including bundled OEM variants.
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