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.
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Affected Vendors & Products
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History
Thu, 26 Feb 2026 13:15:00 +0000
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ssvc
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Thu, 26 Feb 2026 00:15:00 +0000
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threat_severity
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threat_severity
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Wed, 25 Feb 2026 16:15:00 +0000
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Rollupjs
Rollupjs rollup |
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| CPEs | cpe:2.3:a:rollupjs:rollup:*:*:*:*:*:node.js:*:* | |
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Rollupjs
Rollupjs rollup |
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cvssV3_1
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Wed, 25 Feb 2026 12:00:00 +0000
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Rollup
Rollup rollup |
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| Vendors & Products |
Rollup
Rollup rollup |
Wed, 25 Feb 2026 03:15:00 +0000
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| 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. | |
| Title | Rollup 4 has Arbitrary File Write via Path Traversal | |
| Weaknesses | CWE-22 | |
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| Metrics |
cvssV4_0
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Status: PUBLISHED
Assigner: GitHub_M
Published: 2026-02-25T02:08:06.682Z
Updated: 2026-02-25T20:10:29.816Z
Reserved: 2026-02-20T19:43:14.602Z
Link: CVE-2026-27606
Updated: 2026-02-25T20:10:18.661Z
Status : Analyzed
Published: 2026-02-25T03:16:04.603
Modified: 2026-02-25T16:05:11.063
Link: CVE-2026-27606