EUVD-2026-57392
GHSA-mjv5-423q-gjfg
Severity by source
AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H
Network-reachable stored XSS needs a developer-role account (PR:L) and a victim opening the modal (UI:R); script runs in the victim's browser context, changing scope (S:C) with full impact on the compromised session.
Primary rating from Vendor (GitLab).
CVSS VectorNVD
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H
Lifecycle Timeline
7DescriptionNVD
GitLab has remediated an issue in GitLab CE/EE affecting all versions from 19.2 before 19.2.2 that under certain conditions could have allowed an authenticated user with developer-role permissions to escalate privileges due to improper sanitization of HTML content rendered in a CI job modal.
Articles & Coverage 2
AnalysisAI
Stored cross-site scripting in GitLab CE/EE 19.2 before 19.2.2 lets an authenticated user holding only developer-role permissions inject unsanitized HTML that executes in the browser of a higher-privileged user who opens a CI job modal, enabling privilege escalation. Publicly available exploit code exists (HackerOne report #3880796), though EPSS is modest at 0.30% (22nd percentile) and CISA SSVC records no observed exploitation. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Requires an authenticated account with developer-role permissions on a project the attacker can influence, plus a specific configuration/interaction: the malicious HTML must be rendered in GitLab's CI job modal and a higher-privileged victim must open that modal (UI:R), so exploitation is not automatable and cannot occur against a passive or non-interacting target. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The signals are mixed and warrant prioritized-but-not-emergency handling. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker with developer-role access to a shared GitLab project crafts a CI job (or job-related content) embedding a malicious HTML/JavaScript payload that is stored and later rendered unsanitized in the CI job modal. When a maintainer or admin opens that job's modal, the script executes in their authenticated session, letting the attacker perform privileged actions (e.g., escalating their own role or exfiltrating tokens). … |
| Remediation | Vendor-released patch: upgrade GitLab CE/EE to 19.2.2 or later per the GitLab 19.2.2 patch release (https://docs.gitlab.com/releases/patches/patch-release-gitlab-19-2-2-released/); this is the primary and recommended fix. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours: inventory all GitLab CE/EE deployments, identify instances running versions 19.2.0-19.2.1, and document the scope of developer-role user accounts. …
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Same weakness CWE-79 – Cross-site Scripting (XSS)
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External POC / Exploit Code
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