GitLab’s critical CVE-2026-19478 is under active exploitation within days of disclosure.
According to cybersecurity firm watchTowr, the 9.4-CVSS code-injection flaw lets unauthenticated attackers rewrite or delete publicly accessible GitLab projects. The vulnerability can be triggered via a GraphQL directive, GitLab said in versions 19.2.4, 19.…
Source: The Hacker News · August 21, 2026 at 10:01 AM · AI-assisted report
Single-sourceKUALA LUMPUR, 21 AUGUST 2026 —
Listen to this article
DomainFork Audio · read aloud
According to cybersecurity firm watchTowr, the 9.4-CVSS code-injection flaw lets unauthenticated attackers rewrite or delete publicly accessible GitLab projects. The vulnerability can be triggered via a GraphQL directive, GitLab said in versions 19.2.4, 19.1.6, 19.0.8 and 18.11.11.
Market Impact
watchTowr reproduced the issue minutes after disclosure and detected in-the-wild attacks against its honeypot network. Principal security researcher Jake Knott said AI-enabled attackers are compressing the time from disclosure to exploitation.
“Organizations that haven’t patched should hunt web logs for requests containing ‘@gl_introduced’,” Knott said. He also advised restricting unauthenticated access to “/api/graphql” or removing public repository access if patching is delayed.
The flaw can delete entire repositories and forge merge records to disguise failed fixes, watchTowr added. It urged organizations running internet-facing self-hosted GitLab instances to upgrade immediately.