High 8.8Published Feb 24, 2026

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

Updated under an hour ago (Oct 27, 2026, 2:10 PM ET)

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It affects rollup and 21 other products. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

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.

CVSS: 8.8 HIGH (v4.0, CNA)CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:P
Weakness (CWE): CWE-22
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Modified
Record last updated: Sep 10, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

rollup rollup rollup:rollup (from the name)	before 2.80.0; from 3.0.0, < 3.30.0; from 4.0.0, < 4.59.0	CNA record
Red Hat Red Hat Ansible Automation Platform 2.5 for RHEL 8 redhat:ansible_automation_platform	from 0:2.5.20260422-2.el8ap not affected	CISA ADP
Red Hat Red Hat Developer Hub 1.8 redhat:rhdh	from 1774545605 not affected	CISA ADP
Red Hat Red Hat OpenShift Dev Spaces 3.27 redhat:openshift_devspaces	from 1776718585 not affected	CISA ADP
Red Hat Red Hat OpenShift Service Mesh 2.6 redhat:service_mesh	from 1773059917 not affected; from 1776191302 not affected	CISA ADP
Red Hat Red Hat Quay 3.10 redhat:quay	from 1773971077 not affected	CISA ADP
Red Hat Red Hat Trusted Artifact Signer 1.3 redhat:trusted_artifact_signer	from 1773934794 not affected	CISA ADP
Red Hat OpenShift Pipelines redhat:openshift_pipelines	1	CISA ADP
Red Hat Red Hat Advanced Cluster Security 4 redhat:advanced_cluster_security	4	CISA ADP
Red Hat Red Hat AMQ Broker 7 redhat:amq_broker	7	CISA ADP
1–10 of 22

References

References

https://github.com/rollup/rollup/security/advisories/GHSA-mw96-cpmx-2vgc	x-refsource-confirm, exploit, vendor-advisory
https://github.com/rollup/rollup/commit/c60770d7aaf750e512c1b2774989ea4596e660b2	x-refsource-misc, patch
https://github.com/rollup/rollup/commit/c8cf1f9c48c516285758c1e11f08a54f304fd44e	x-refsource-misc, patch
https://github.com/rollup/rollup/commit/d6dee5e99bb82aac0bee1df4ab9efbde455452c3	x-refsource-misc, patch
https://github.com/rollup/rollup/releases/tag/v2.80.0	x-refsource-misc, product
https://github.com/rollup/rollup/releases/tag/v3.30.0	x-refsource-misc, product
https://github.com/rollup/rollup/releases/tag/v4.59.0	x-refsource-misc, product
https://access.redhat.com/errata/RHSA-2026:10175
https://access.redhat.com/errata/RHSA-2026:13508
https://access.redhat.com/errata/RHSA-2026:13512
1–10 of 20

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.