gitlab·Apr 22, 2026·3 min readCurated summary

GitLab Patch Release: 18.11.1, 18.10.4, 18.9.6 | GitLab Docs

GitLab released patch versions 18.11.1, 18.10.4, and 18.9.6 on April 22, 2026, addressing multiple security vulnerabilities and bugs in CE and EE. Self-managed installations should upgrade immediately, while GitLab.com is already patched and GitLab Dedicated customers need no action. The fixes include unauthenticated GraphQL and browser-based attacks, several denial-of-service flaws, and access-control weaknesses. ## Release Scope and Upgrade Guidance - Applies to GitLab Community Edition and Enterprise Edition. - Affects all deployment types unless otherwise specified, including Omnibus, source installations, and Helm charts. - Recommended fixed versions: - 18.11.1 - 18.10.4 - 18.9.6 - GitLab issues detailing security vulnerabilities are made public 30 days after the relevant patch release. - GitLab publishes both scheduled patch releases, issued on the second and fourth Wednesdays, and ad-hoc critical patches for high-severity vulnerabilities. ## High-Severity Vulnerabilities - **CVE-2026-4922 — GraphQL CSRF** - CVSS 8.1. - An unauthenticated attacker could execute GraphQL mutations on behalf of an authenticated user because of insufficient CSRF protection. - Affects versions before 18.9.6, 18.10.4, and 18.11.1. - **CVE-2026-5816 — Web IDE path validation** - CVSS 8.0. - Under certain conditions, improper path validation could allow unauthenticated attackers to execute arbitrary JavaScript in a user’s browser session. - Affects the 18.10 and 18.11 release lines before the listed patches. - **CVE-2026-5262 — Storybook cross-site scripting** - CVSS 8.0. - Improper input validation could allow unauthenticated access to tokens in the Storybook development environment. - Affects versions from 16.1 through the unpatched 18.9, 18.10, and 18.11 releases. ## Denial-of-Service Fixes - **CVE-2025-0186:** Crafted requests to the discussions endpoint could exhaust server resources. - **CVE-2026-1660:** Improper input validation during Jira issue imports could enable resource exhaustion. - **CVE-2025-6016:** Insufficient limits when retrieving notes could cause service disruption. - **CVE-2025-3922:** Resource-allocation weaknesses in the GraphQL API could allow authenticated users to overwhelm the system. - Each issue carries a CVSS score of 6.5 and generally requires authentication. ## Access-Control and Session Fixes - **CVE-2026-6515 — Virtual registry credentials** - CVSS 5.4. - Invalidated or incorrectly scoped credentials could continue accessing Virtual Registries. - **CVE-2026-5377 — Confidential issue titles** - CVSS 4.3. - Authenticated users could potentially view titles of confidential or private issues in public projects. - **CVE-2026-3254 — Mermaid sandbox** - CVSS 3.5. - Improper validation could allow authenticated users to load unauthorized content into another user’s browser. - The release also lists **CVE-2025-9957**, involving improper access control in the project fork relationship API; the provided text does not include its full impact or severity details. Self-managed GitLab administrators should apply the appropriate patch release as soon as possible, especially because several vulnerabilities permit unauthenticated browser or API attacks.

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Security FixesGitlabGraphQLVulnerability Management+4

gitlab·Apr 8, 2026·2 min readCurated summary

GitLab Patch Release: 18.10.3, 18.9.5, 18.8.9 | GitLab Docs

GitLab released patch versions 18.10.3, 18.9.5, and 18.8.9 on April 8, 2026, addressing important security and bug fixes. Self-managed CE and EE installations should upgrade immediately, while GitLab.com is already patched and GitLab Dedicated customers need no action. The fixes cover unauthorized access, denial-of-service vulnerabilities, code injection, XSS, and information disclosure. ## Release Scope and Upgrade Guidance - The patches apply to GitLab Community Edition and Enterprise Edition. - Administrators should upgrade installations affected by the listed vulnerabilities to the latest supported patch release. - GitLab issues describing security vulnerabilities will become public 30 days after the release in which they were fixed. - Patch releases are generally issued on the second and fourth Wednesdays, with urgent ad-hoc releases for critical vulnerabilities. ## Authentication and Authorization Fixes - **CVE-2026-5173 (CVSS 8.5):** Authenticated users could invoke unintended server-side methods through WebSocket connections. - **CVE-2026-2619 (CVSS 4.3):** Auditor users could modify vulnerability flag data in private projects through the AI detection API. - **CVE-2026-1752 (CVSS 4.3):** Developers could modify protected environment settings through authorization flaws in the Environments API. - **CVE-2026-2104:** CSV exports could expose confidential issues assigned to other users because of insufficient authorization checks. ## Denial-of-Service Vulnerabilities - **CVE-2026-1092 (CVSS 7.5):** Unauthenticated attackers could crash or disrupt services through malformed JSON sent to the Terraform state lock API. - **CVE-2025-12664 (CVSS 7.5):** Repeated unauthenticated GraphQL queries could cause denial of service. - **CVE-2026-1403 (CVSS 6.5):** Authenticated users could disrupt Sidekiq workers by importing malformed CSV files. - **CVE-2026-1101 (CVSS 6.5):** Authenticated users could overload GitLab through improperly validated GraphQL SBOM queries. ## Code Execution and Cross-Site Scripting - **CVE-2026-1516 (CVSS 5.7):** Crafted Code Quality report content could leak the IP addresses of users viewing the report. - **CVE-2026-4332 (CVSS 5.4):** Authenticated users could execute arbitrary JavaScript in other users’ browsers through customizable analytics dashboards. ## Information Disclosure - **CVE-2025-9484 (CVSS 4.3):** Certain GraphQL queries could reveal other users’ email addresses to authenticated users. - The release also fixes CSV export authorization issues that could expose confidential issue data. Administrators of self-managed GitLab CE or EE instances should apply 18.10.3, 18.9.5, or 18.8.9 as soon as possible, depending on their supported release branch.

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Security FixesGitlabAPIGraphQL+4