Critical severity · published Aug 17, 2026
CVE-2026-19478
Improper Control of Generation of Code ('Code Injection') in GitLab
9.1
CVSS
2.2%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)2.2% · higher than 82% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
GI
GitLab · GitLab
18.2 before 18.11.11; 19.0 before 19.0.8; 19.1 before 19.1.6; 19.2 before 19.2.4 · source: vendor, NVD
In the news
VulnerabilityCritical
GitLab Warns of Active Exploitation of Critical GraphQL Flaw
GitLab flaw CVE-2026-19478 is now under active exploitation, allowing unauthenticated attackers to modify or delete public projects. WatchTowr researchers warn of active exploitation of critical GitLab flaw CVE-2026-19478 (CVSS score of 9.4). This week, GitLab pushed out an emergency patch to address this flaw, which could let an attacker with zero credentials remotely modify or […]
Aug 21, 2026·Security Affairs
VulnerabilityCritical
GitLab CVE-2026-19478 Comes Under Active Exploitation Within Days of Disclosure
A newly disclosed security flaw in GitLab has come under active exploitation within days of public disclosure, according to watchTowr.
The vulnerability in question is CVE-2026-19478 (CVSS score: 9.4), a case of code injection that allows an unauthenticated attacker to modify or delete publicly accessible GitLab projects and rewrite their data under certain conditions without requiring
Aug 21, 2026·The Hacker News
VulnerabilityCritical
Critical GitLab Zero-Click Flaw Poses Mitigation Challenges
A lack of technical details could make it hard for organizations running self-managed GitLab versions to detect potential exploitation of CVE-2026-19478.
Aug 18, 2026·Dark Reading
VulnerabilityCritical
Critical GitLab flaw allows attackers to modify or delete public projects (CVE-2026-19478)
GitLab has released patches for two vulnerabilities, including a critical-severity code injection flaw that can be exploited without authentication. The vulnerabilities affect GitLab Community Edition (CE) and Enterprise Edition (EE) 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. The fixes are available in GitLab 19.2.4, 19.1.6, 19.0.8, and 18.11.11. “These versions contain important bug and security fixes, and we strongly recommend that all self-managed GitLab installations be upgraded … More →
The post Critical GitLab flaw allows attackers to modify or delete public projects (CVE-2026-19478) appeared first on Help Net Security .
Aug 18, 2026·Help Net Security
VulnerabilityCritical
GitLab Patches Critical Unauthenticated GraphQL Vulnerability
GitLab patched a critical GraphQL flaw that let unauthenticated attackers remotely modify or delete public projects on self-managed servers. GitLab pushed out an emergency patch this week to address a critical flaw, tracked as CVE-2026-19478 (CVSS score of 9.4), that could let an attacker with zero credentials remotely modify or delete public projects and user […]
Aug 18, 2026·Security Affairs
VulnerabilityCritical
Critical GitLab GraphQL Flaw Could Let Unauthenticated Attackers Delete Public Projects
GitLab has released security updates to address a critical vulnerability impacting its Community Edition (CE) and Enterprise Edition (EE) software that, under certain conditions, could allow an unauthenticated attacker to remotely modify or delete public projects and user data.
The flaw, tracked as CVE-2026-19478, has been rated Critical by GitLab and assigned a CVSS score of 9.4.
Released on
Aug 17, 2026·The Hacker News
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-19478
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-19478
Vendor Advisory
https://docs.gitlab.com/releases/patches/patch-release-gitlab-19-2-4-released/
Not Applicable
https://gitlab.com/gitlab-org/gitlab/-/work_items/611377
Permissions Required
https://hackerone.com/reports/3926431
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