GitLab 18.3
GitLab 18.3
The GitLab 18.3 reached end of service life on Nov 20, 2025 — GitLab no longer ships security patches or fixes for it. Our third-party support keeps it safe to run: 24/7 engineers manage issues, remediate vulnerabilities, and help you maintain compliance.
24/7 engineers own your GitLab 18.3 incidents end to end.
Mitigation and patch-around guidance when the vendor no longer ships fixes.
Controls evidence and documentation that keep auditors satisfied.
Specifications
- product
- gitlab
- release
- 18.3
- product Label
- GitLab
- release Label
- 18.3
- codename
- lts
- latest Version
- 18.3.6
- release Date
- 2025-08-21
- maintained
- source Url
- https://endoflife.date/gitlab
Lifecycle Dates
- End of Service Life
- Nov 20, 2025
- Last OEM Support
- Sep 18, 2025
OEM vs. 3rd Party Support
See how third-party support compares to the vendor contract for GitLab 18.3 — monitoring, break/fix, vulnerability work, operations and compliance, before and after EOSL.
| Feature | OEM Support | 3rd Party Support |
|---|---|---|
| Post-EOSL Support | ||
| Break/Fix Support | Until EOSL | |
| 24/7 Monitoring | ||
| Vulnerability Scanning & Remediation | ||
| Managed Operations | ||
| Procedure & Configuration Review | ||
| Compliance & Audit Documentation | Limited | |
| Discounted Migration to Other Platforms |
Why Choose 3rd Party Support for GitLab 18.3?
Vulnerability Remediation
Scanning, mitigation and patch-around guidance for GitLab 18.3 when the vendor no longer ships fixes.
Compliance Maintenance
Procedure review, controls evidence and the documentation auditors ask for — maintained continuously, not scrambled at audit time.
24/7 Expert Support
Engineers who know this release monitor, manage and fix issues around the clock — break/fix to managed operations.
GitLab 18.3 Support: Frequently Asked Questions
Is the GitLab 18.3 still supported?
GitLab ended support for the GitLab 18.3 on Nov 20, 2025 — no more patches or fixes from the vendor. Third-party support keeps it covered: our engineers manage issues, remediate vulnerabilities, and help you maintain compliance for as long as you run it.
When is the GitLab 18.3 end of service life (EOSL) date?
GitLab lists the end of service life for the GitLab 18.3 as Nov 20, 2025.
Can I keep using the GitLab 18.3 after its EOSL date?
Yes. EOSL means GitLab stops issuing patches and support — the software itself keeps running. Third-party support covers it from there: issue management, security vulnerability remediation, and the compliance documentation auditors ask for, for as long as you choose to run it.
How much does third-party support for the GitLab 18.3 cost?
Typically 40-70% below the OEM maintenance renewal price. Exact pricing depends on quantity, service level and location — request a quote and we respond within 24 hours.
Known Vulnerabilities Affecting GitLab 18.3
182 published CVEs affect the GitLab 18.3, including 51 rated critical or high severity. GitLab no longer ships security patches for this release — our engineers provide mitigation guidance, workarounds and hardening support.
| CVE | Severity | CVSS | Published | Summary |
|---|---|---|---|---|
| CVE-2026-15217 | HIGH | 8.7 | Aug 12, 2026 | GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.2 before 19.0.6, 19.1 before 19.1.4, and 19.2 before 19.2.2 that under certain conditions could have allowed cross-site scripting due to improper neutralization of user-controlled values rendered in table cell content by an analytics dashboard component. |
| CVE-2026-15216 | HIGH | 8.7 | Aug 12, 2026 | GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.2 before 19.0.6, 19.1 before 19.1.4, and 19.2 before 19.2.2 that under certain conditions could have allowed cross-site scripting due to improper neutralization of user-controlled data rendered in pagination controls by an analytics dashboard component. |
| CVE-2026-6896 | HIGH | 8.7 | Jul 8, 2026 | GitLab has remediated an issue in GitLab EE affecting all versions from 13.11 before 18.11.7, 19.0 before 19.0.4, and 19.1 before 19.1.2 that under certain conditions could have allowed an authenticated user with developer-role permissions to execute arbitrary scripts in another user's browser session due to improper sanitization of user-supplied input. |
| CVE-2026-10086 | HIGH | 8.7 | Jun 25, 2026 | GitLab has remediated an issue in GitLab EE affecting all versions from 16.4 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 with developer-role permissions to execute arbitrary client-side code in the context of another user's session, due to improper sanitization of user-supplied input. |
| CVE-2026-10087 | HIGH | 8.7 | Jun 11, 2026 | GitLab has remediated an issue in GitLab EE affecting all versions from 17.1 before 18.10.8, 18.11 before 18.11.5, and 19.0 before 19.0.2 that under certain conditions could have allowed an authenticated user with developer-role permissions to execute arbitrary client-side code on behalf of a targeted user due to improper input sanitization in the Analytics Dashboard. |
| CVE-2026-7481 | HIGH | 8.7 | May 14, 2026 | GitLab has remediated an issue in GitLab EE affecting all versions from 16.4 before 18.9.7, 18.10 before 18.10.6, and 18.11 before 18.11.3 that could have allowed an authenticated user with developer-role permissions to execute arbitrary JavaScript in other users' browsers due to improper input sanitization. |
| CVE-2026-1090 | HIGH | 8.7 | Mar 11, 2026 | GitLab has remediated an issue in GitLab CE/EE affecting all versions from 10.6 before 18.7.6, 18.8 before 18.8.6, and 18.9 before 18.9.2 that could have allowed an authenticated user, when the `markdown_placeholders` feature flag was enabled, to inject JavaScript in a browser due to improper sanitization of placeholder content in markdown processing. |
| CVE-2025-9222 | HIGH | 8.7 | Jan 9, 2026 | GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.2.2 before 18.5.5, 18.6 before 18.6.3, and 18.7 before 18.7.1 that could have allowed an authenticated user to achieve stored cross-site scripting by exploiting GitLab Flavored Markdown. |
| CVE-2025-9642 | HIGH | 8.7 | Sep 26, 2025 | An issue has been discovered in GitLab CE/EE affecting all versions from 14.10 before 18.2.7, 18.3 before 18.3.3, and 18.4 before 18.4.1 that could allow an attacker to inject malicious content that may lead to account takeover. |
| CVE-2026-6267 | HIGH | 8.5 | Jul 29, 2026 | GitLab has remediated an issue in GitLab CE/EE affecting all versions from 10.1.0 before 19.0.5, 19.1 before 19.1.3, and 19.2 before 19.2.1 that under certain conditions could have allowed an authenticated user with Developer role to access unauthorized information due to insufficient access controls on internal request handling. |
| CVE-2026-5173 | HIGH | 8.5 | Apr 8, 2026 | GitLab has remediated an issue in GitLab CE/EE affecting all versions from 16.9.6 before 18.8.9, 18.9 before 18.9.5, and 18.10 before 18.10.3 that could have allowed an authenticated user to invoke unintended server-side methods through websocket connections due to improper access control. |
| CVE-2025-11702 | HIGH | 8.5 | Oct 29, 2025 | GitLab has remediated an issue in EE affecting all versions from 17.1 before 18.3.5, 18.4 before 18.4.3, and 18.5 before 18.5.1 that could have allowed an authenticated attacker with specific permissions to hijack project runners from other projects. |
| CVE-2025-6454 | HIGH | 8.5 | Sep 12, 2025 | An issue has been discovered in GitLab CE/EE affecting all versions from 16.11 before 18.1.6, 18.2 before 18.2.6, and 18.3 before 18.3.2 that could have allowed authenticated users to make unintended internal requests through proxy environments by injecting crafted sequences. |
| CVE-2026-12436 | HIGH | 8.4 | Jul 29, 2026 | GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.0 before 19.0.5, 19.1 before 19.1.3, and 19.2 before 19.2.1 that under certain conditions could have allowed an authenticated user to modify CI/CD configuration belonging to another user due to improper validation of user-supplied attributes when processing pipeline schedule inputs. |
| CVE-2026-4922 | HIGH | 8.1 | Apr 22, 2026 | GitLab has remediated an issue in GitLab CE/EE affecting all versions from 17.0 before 18.9.6, 18.10 before 18.10.4, and 18.11 before 18.11.1 that could have allowed an unauthenticated user to execute GraphQL mutations on behalf of authenticated users due to insufficient CSRF protection. |
| CVE-2026-2370 | HIGH | 8.1 | Mar 30, 2026 | GitLab has remediated an issue in GitLab CE/EE affecting all versions from 14.3 before 18.8.7, 18.9 before 18.9.3, and 18.10 before 18.10.1 affecting Jira Connect installations that could have allowed an authenticated user with minimal workspace permissions to obtain installation credentials and impersonate the GitLab app due to improper authorization checks. |
| CVE-2026-3857 | HIGH | 8.1 | Mar 25, 2026 | GitLab has remediated an issue in GitLab CE/EE affecting all versions from 17.10 before 18.8.7, 18.9 before 18.9.3, and 18.10 before 18.10.1 that could have allowed an unauthenticated user to execute arbitrary GraphQL mutations on behalf of authenticated users due to insufficient CSRF protection. |
| CVE-2026-5262 | HIGH | 8.0 | Apr 22, 2026 | GitLab has remediated an issue in GitLab CE/EE affecting all versions from 16.1.0 before 18.9.6, 18.10 before 18.10.4, and 18.11 before 18.11.1 that under certain conditions could have allowed an unauthenticated user to access tokens in the Storybook development environment due to improper input validation. |
| CVE-2026-0752 | HIGH | 8.0 | Feb 25, 2026 | GitLab has remediated an issue in GitLab CE/EE affecting all versions from 16.2 before 18.7.5, 18.8 before 18.8.5, and 18.9 before 18.9.1 that under certain circumstances, could have allowed an unauthenticated user to inject arbitrary scripts into the Mermaid sandbox UI. |
| CVE-2025-7659 | HIGH | 8.0 | Feb 11, 2026 | GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.2 before 18.6.6, 18.7 before 18.7.4, and 18.8 before 18.8.4 that could have allowed an unauthenticated user to steal tokens and access private repositories by abusing incomplete validation in the Web IDE. |
Showing the 20 most severe of 182 known CVEs.
Get Third Party Support