Luxon Inefficient Regular Expression Complexity vulnerability
Impact
Luxon's `DateTime.fromRFC2822() has quadratic (N^2) complexity on some specific inputs. This causes a noticeable slowdown for inputs with lengths above 10k characters. Users providing untrusted data to this method are therefore vulnerable to (Re)DoS attacks.
This is the same bug as Moment's https://github.com/moment/moment/security/advisories/GHSA-wc69-rhjr-hc9g
Workarounds
Limit the length of the input.
References
There is an excellent writeup of the same issue in Moment: https://github.com/moment/moment/pull/6015#issuecomment-1152961973
Details
DateTime.fromRFC2822("(".repeat(500000)) takes a couple minutes to complete.
Affected software
Click a technology to see all vulnerabilities affecting it.
| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| npm package | luxon | >= 1.0.0, < 1.28.1, >= 2.0.0, < 2.5.2, >= 3.0.0, < 3.2.1 | 1.28.1, 2.5.2, 3.2.1 |
References
- https://github.com/moment/luxon/security/advisories/GHSA-3xq5-wjfh-ppjc
- https://github.com/moment/moment/security/advisories/GHSA-wc69-rhjr-hc9g
- https://nvd.nist.gov/vuln/detail/CVE-2023-22467
- https://github.com/moment/moment/pull/6015#issuecomment-1152961973
- https://github.com/moment/luxon/commit/5ab3bf64a10da929a437629cdb2f059bb83212bf
- https://github.com/moment/luxon
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/44I3WAJKYXDLOVYRGMHAUXMIV4SPFXDZ
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4LIVOASKBQH7FEUI5RWM3SOHR6VK7ZZR
- 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- Platform
- npm
- Package
luxon- Disclosed
- 09.01.2023
- Updated
- 11.10.2026 10:22
Sources and licenses
OSV / GitHub Advisory Database - GHSA-3xq5-wjfh-ppjc - CC BY 4.0
Vulnerability history: luxon
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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