CVE-2024-43373
webcrack has an Arbitrary File Write Vulnerability on Windows when Parsing and Saving a Malicious Bundle
- 7.7HighCVSS base score
- 0.45%Exploitation in 30 daysEPSS · top 61% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- YesPublic exploitsa reference or SSVC says so
Description
webcrack is a tool for reverse engineering javascript. An arbitrary file write vulnerability exists in the webcrack module when processing specifically crafted malicious code on Windows systems. This vulnerability is triggered when using the unpack bundles feature in conjunction with the saving feature. If a module name includes a path traversal sequence with Windows path separators, an attacker can exploit this to overwrite files on the host system. This vulnerability allows an attacker to write arbitrary `.js` files to the host system, which can be leveraged to hijack legitimate Node.js modules to gain arbitrary code execution. This vulnerability has been patched in version 2.14.1.
Public exploit
An exploit or proof of concept is public: anyone can try it against an unpatched system. CISA's SSVC rates its exploitation: a proof of concept is public.
Timeline
ID reserved
By GitHub_M
- 6 days later
· 6 days later
Published
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| GitHub_MCNA (assigner) | 3.1 | High7.7 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:L/I:H/A:L |
| NVDNVD · Analyzed | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.45% · top 61% of all CVEs (12 Nov 2026)
- CISA SSVC
- Exploitation: poc · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.7.
Affected products
Affected packages
From reviewed advisories of the GitHub Advisory Database.
- npmwebcrackGHSA-ccqh-278p-xq6w (opens in a new tab)
References
References3
- https://github.com/j4k0xb/webcrack/security/advisories/GHSA-ccqh-278p-xq6w (opens in a new tab)x_refsource_CONFIRM
- https://github.com/j4k0xb/webcrack/commit/4bc5c6f353012ee7edc2cb39d01a728ab7426999 (opens in a new tab)x_refsource_MISC
- https://github.com/j4k0xb/webcrack/blob/241f9469e6401f3dabc6373233d85a5e76966b54/packages/webcrack/src/unpack/bundle.ts#L79 (opens in a new tab)x_refsource_MISC
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2024-2557 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-ccqh-278p-xq6w (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2024-43373)Record last updated .