pacote is vulnerable to Denial of Service (DoS) via the addGitSha function
Versions of the package pacote from 11.2.7 are vulnerable to Denial of Service (DoS) via the addGitSha function. An attacker can exploit this vulnerability by supplying a specially crafted spec.rawSpec value that triggers the function’s regex replacement and string-manipulation logic, causing excessive CPU consumption and potentially stalling or crashing the process.
Affected software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| npm package | pacote | >= 11.2.7, < 21.5.1 | 21.5.1 |
References
- https://nvd.nist.gov/vuln/detail/CVE-2026-9496
- https://github.com/npm/pacote/commit/627a7dc1a214d857472a13b48e42559c75288c9e
- https://github.com/npm/pacote/commit/ce804fb1647fe1699b2f87efd01ea9f4efed8508
- https://github.com/npm/pacote
- https://github.com/npm/pacote/blob/9d7459440826ab4cf962ef98d8f3fd0c4d464b5c/lib/util/add-git-sha.js%23L2C1-L13C2
- https://github.com/npm/pacote/releases/tag/v21.5.1
- https://github.com/npm/pacote/releases/tag/v22.0.0
- https://security.snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-16874025
- https://security.snyk.io/vuln/SNYK-JS-PACOTE-8225084
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H- Weakness (CWE)
CWE-1333, CWE-400- Platform
- npm
- Package
pacote- Disclosed
- 26.05.2026
- Updated
- 11.10.2026 10:22
Sources and licenses
OSV / GitHub Advisory Database - GHSA-w4pp-8pjf-rmxw - CC BY 4.0
Vulnerability history: pacote
All published vulnerabilities of this package (npm package), newest first. Shows whether this is a one-off slip or a package that needs watching.
This is the only known vulnerability of this package.
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