# CVE-2026-27606: Rollup 4 has Arbitrary File Write via Path Traversal

> CVE-2026-27606: Rollup 4 has Arbitrary File Write via Path Traversal. CVSS 9.1 (CVSS 3.1).

Canonical: https://rewindex.com/cve/CVE-2026-27606
Last updated: 2026-09-10T13:18:01Z

- Published: 2026-02-25 02:08 UTC · Updated: 2026-09-10 13:18 UTC · Assigner: GitHub\_M
- CVSS: 9.1 (CVSS 3.1) · Severity: Critical · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
- EPSS: 1.7%, 76th percentile (scored 2026-10-25)
- CISA KEV: no
- CWE: CWE-22

## Description

Rollup is a module bundler for JavaScript. Versions prior to 2.80.0, 3.30.0, and 4.59.0 of the Rollup module bundler (specifically v4.x and present in current source) is vulnerable to an Arbitrary File Write via Path Traversal. Insecure file name sanitization in the core engine allows an attacker to control output filenames (e.g., via CLI named inputs, manual chunk aliases, or malicious plugins) and use traversal sequences (\`../\`) to overwrite files anywhere on the host filesystem that the build process has permissions for. This can lead to persistent Remote Code Execution (RCE) by overwriting critical system or user configuration files. Versions 2.80.0, 3.30.0, and 4.59.0 contain a patch for the issue.

## Affected vendors and products

- Red Hat: OpenShift Pipelines
- Red Hat: OpenShift Service Mesh 3
- Red Hat: Red Hat Advanced Cluster Security 4
- Red Hat: Red Hat AMQ Broker 7
- Red Hat: Red Hat Ansible Automation Platform 2
- Red Hat: Red Hat Ansible Automation Platform 2.5 for RHEL 8
- Red Hat: Red Hat Ansible Automation Platform 2.5 for RHEL 9
- Red Hat: Red Hat Ansible Automation Platform 2.6
- Red Hat: Red Hat Ansible Automation Platform 2.6 for RHEL 9
- Red Hat: Red Hat build of OptaPlanner 8
- Red Hat: Red Hat Build of Podman Desktop - Tech Preview
- Red Hat: Red Hat Developer Hub 1.8
- Red Hat: Red Hat Developer Hub 1.9
- Red Hat: Red Hat Enterprise Linux 10
- Red Hat: Red Hat Enterprise Linux 8
- Red Hat: Red Hat Enterprise Linux 9
- Red Hat: Red Hat Enterprise Linux AI (RHEL AI) 3
- Red Hat: Red Hat Fuse 7
- Red Hat: Red Hat JBoss Enterprise Application Platform 8
- Red Hat: Red Hat JBoss Enterprise Application Platform Expansion Pack
- Red Hat: Red Hat OpenShift Container Platform 4
- Red Hat: Red Hat OpenShift Dev Spaces 3.27
- Red Hat: Red Hat OpenShift distributed tracing 3
- Red Hat: Red Hat OpenShift Service Mesh 2.6
- Red Hat: Red Hat Quay 3.10
- Red Hat: Red Hat Single Sign-On 7
- Red Hat: Red Hat Trusted Artifact Signer 1.3
- Red Hat: Self-service automation portal 2
- rollup: rollup

## Tracked companies

- [Jira](https://rewindex.com/company/jira.md)

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2026-27606)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2026-27606)
- [https://github.com/rollup/rollup/commit/c60770d7aaf750e512c1b2774989ea4596e660b2](https://github.com/rollup/rollup/commit/c60770d7aaf750e512c1b2774989ea4596e660b2)
- [https://github.com/rollup/rollup/commit/c8cf1f9c48c516285758c1e11f08a54f304fd44e](https://github.com/rollup/rollup/commit/c8cf1f9c48c516285758c1e11f08a54f304fd44e)
- [https://github.com/rollup/rollup/commit/d6dee5e99bb82aac0bee1df4ab9efbde455452c3](https://github.com/rollup/rollup/commit/d6dee5e99bb82aac0bee1df4ab9efbde455452c3)
- [https://github.com/rollup/rollup/releases/tag/v2.80.0](https://github.com/rollup/rollup/releases/tag/v2.80.0)
- [https://github.com/rollup/rollup/releases/tag/v3.30.0](https://github.com/rollup/rollup/releases/tag/v3.30.0)
- [https://github.com/rollup/rollup/releases/tag/v4.59.0](https://github.com/rollup/rollup/releases/tag/v4.59.0)
- [https://github.com/rollup/rollup/security/advisories/GHSA-mw96-cpmx-2vgc](https://github.com/rollup/rollup/security/advisories/GHSA-mw96-cpmx-2vgc)

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2026-27606 · Markdown: https://rewindex.com/cve/CVE-2026-27606.md · JSON: https://rewindex.com/api/v1/cves/CVE-2026-27606 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T02:15:45.598Z