JavaScript execution via clobbered currentScript lookup
Published Mar 3, 2025 · Updated Mar 5, 2025
DOM clobbering in tsup 8.3.4 and earlier allows remote attackers to execute JavaScript via attacker-controlled HTML in a bundled page. The cjs_shims.js getImportMetaUrl helper trusts document.currentScript without confirming that it is a SCRIPT element, so a named injected element can replace import.meta.url with an attacker-controlled URL. Exploitation requires a generated bundle that uses import.meta.url to load code and a page that accepts attacker-controlled HTML; the demonstrated consequence is loading a script from an attacker-controlled origin.
Summary
What happened
DOM clobbering in tsup 8.3.4 and earlier allows remote attackers to execute JavaScript via attacker-controlled HTML in a bundled page. The cjs_shims.js getImportMetaUrl helper trusts document.currentScript without confirming that it is a SCRIPT element, so a named injected element can replace import.meta.url with an attacker-controlled URL. Exploitation requires a generated bundle that uses import.meta.url to load code and a page that accepts attacker-controlled HTML; the demonstrated consequence is loading a script from an attacker-controlled origin.
The record
- CVE
- CVE-2024-53384
- Published
- Mar 3, 2025
- Updated
- Mar 5, 2025
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- CWE-79, T1059.007
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Mar 3, 2025CVE publishedPublication date reported by the CVE source.
- Mar 5, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
What conditions does exploitation require?
What is affected?
Affected products and versions are unavailable in this record.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
- DOM Clobbering Gadget found in tsup bundled scripts that leads to XSSproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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