CVE-2023-22467 luxon.js inefficient regular expression complexity vulnerability
Attackers can cause denial of service in applications using Luxon by providing long inputs to DateTime.fromRFC2822, triggering quadratic regex complexity.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2023-22467?
CVE-2023-22467 is a high-severity denial of service vulnerability in moment luxon, published on 4 Jan 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Luxon is a library for working with dates and times in JavaScript. On the 1.x branch prior to 1.38.1, the 2.x branch prior to 2.5.2, and the 3.x branch on 3.2.1, 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 issue also appears in Moment as CVE-2022-31129. Versions 1.38.1, 2.5.2, and 3.2.1 contain patches for this issue. As a workaround, limit the length of the input.
Weakness: CWE-1333
Which versions are affected by CVE-2023-22467?
6 open source packages ship an affected version, including luxon. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
luxon npm | From 1.0.0 | 1.28.1 |
luxon npm | From 1.0.0 | 1.28.1 |
luxon npm | From 2.0.0 | 2.5.2 |
luxon npm | From 2.0.0 | 2.5.2 |
luxon npm | From 3.0.0 | 3.2.1 |
luxon npm | From 3.0.0 | 3.2.1 |
Products include Momentjs Luxon.
How do I fix CVE-2023-22467?
Upgrade luxon to a fixed version for your release line: 1.28.1, 2.5.2 or 3.2.1.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2023-22467 being exploited?
There is no known exploitation of CVE-2023-22467 in the wild and no public exploit code.
Sources
Also known as CLSA-2026-1783731811, GHSA-3xq5-wjfh-ppjc, ROOT-APP-NPM-CVE-2023-22467.