How severe is CVE-2026-19478?

CVE-2026-19478 has a CVSS 3.1 base score of 9.4 (CRITICAL). EPSS estimates a 60.2% probability of exploitation in the next 30 days.

CVE-2026-19478: Improper Control of Generation of Code ('Code

Description

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.2 before 18.11.11, 19.0 before 19.0.8, 19.1 before 19.1.6, and 19.2 before 19.2.4 that under certain conditions could allow an unauthenticated user to remotely modify or delete public projects and user data via a GraphQL directive.

Severity

CVSS 3.1 · CNA9.4 CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:H

SSVC · CISA-ADP

Exploitationnone

Automatableyes

Technical impactpartial

Affected Products

Vendor	Product	Affected versions
GitLab	GitLab	18.2 to <18.11.11 19.0 to <19.0.8 19.1 to <19.1.6 19.2 to <19.2.4

References

3 Links

Exploits & PoCs

HackerOne Bug Bounty Report #3926431

Other references

Record Details

Published

2026-08-17

Last updated

2026-08-17

Assigner (CNA)

GitLab

Credited to

Thanks [hiimguardian](https://hackerone.com/hiimguardian) for reporting this vulnerability through our HackerOne bug bounty program

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Related Tool Categories

Tool categories that test for or protect against this vulnerability class.

CWE-94 · Code Injection

Application Security Tools Penetration Testing Tools

CVE record data © The MITRE Corporation, used under the CVE Terms of Use. Exploited-in-the-wild data from the CISA Known Exploited Vulnerabilities catalog (CC0). Exploit prediction scores by FIRST EPSS (first.org/epss). This site is not endorsed or certified by MITRE, NVD, CISA, or FIRST.