GitLab Warns of Critical Remote Code Execution Vulnerability in CI/CD Regular Expression Compiler
Maximum severity flaw could allow remote attackers to execute arbitrary code on affected instances
Key Takeaways
- GitLab has identified a critical remote code execution vulnerability in the CI/CD Regular Expression Compiler.
- The flaw allows remote attackers to execute arbitrary code on targeted GitLab instances.
- Patches have been released; users should update to the latest patched version immediately.
- Exploitation status is unconfirmed; no public reports of active exploitation at time of reporting.
- Instances with the CI/CD Regular Expression Compiler enabled are potentially affected.
Quick answers
- What happened?
- GitLab has identified a critical vulnerability in the CI/CD Regular Expression Compiler component that could allow remote attackers to execute arbitrary code on targeted instances. The issue is tracked as a maximum severity flaw and affects GitLab instances with the compiler enabled. Patches have been released and users are urged to update immediately.
- Which products are affected?
- CI/CD Regular Expression Compiler
- What should defenders do?
- Users should update GitLab to the latest patched version immediately. All instances with the CI/CD Regular Expression Compiler enabled should be updated as a priority. Monitor GitLab security advisories for further information.
GitLab has warned users to immediately patch a maximum-severity vulnerability in the CI/CD Regular Expression Compiler that could let remote attackers run arbitrary code on targeted instances. The flaw affects the CI/CD Regular Expression Compiler component and has been assigned maximum severity. According to the advisory, the vulnerability allows remote code execution via the regex compiler endpoint. GitLab has released patches addressing the issue; users should update to the latest patched version immediately. Exploitation details have not been publicly disclosed at the time of reporting, and the specific attack vectors are not detailed in the initial advisory. The company recommends that all affected instances be updated as soon as possible to mitigate the risk of potential compromise.
Security Details
The vulnerability exists in the CI/CD Regular Expression Compiler component of GitLab. It allows remote attackers to execute arbitrary code on targeted instances. The flaw has been assigned maximum severity. Specific technical details regarding the exploitation vector are not yet publicly disclosed.
Affected products
CI/CD Regular Expression Compiler
Mitigation
Users should update GitLab to the latest patched version immediately. All instances with the CI/CD Regular Expression Compiler enabled should be updated as a priority. Monitor GitLab security advisories for further information.
Sources
BleepingComputer
GitLab warns of max severity code execution vulnerability
Oct 12, 2026 · 13:09
Original link
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