# CVE-2026-104150: AdonisJS HTTP Server: Uncontrolled Resource Consumption and Inefficient Regular Expression Complexity

> An attacker can cause denial of service by sending crafted route parameters that trigger excessive CPU usage via inefficient regular expressions in the AdonisJS HTTP server.

- **Severity:** High 8.7 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 15 Oct 2026
- **Updated:** 15 Oct 2026
- **Also known as:** AZL-108290, GHSA-524c-h47v-m3h8

## What is CVE-2026-104150?

CVE-2026-104150 is a high-severity denial of service vulnerability in adonisjs http-server, published on 15 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

AdonisJS HTTP Server is a package for handling HTTP requests in the AdonisJS framework. Prior to 8.2.2 and 9.1.1, the regular expression returned by router.matchers.slug() contains adjacent greedy repetitions with overlapping character classes. When an application applies this matcher to an attacker-controlled route parameter, a long slug ending in a character rejected by the final assertion causes quadratic backtracking and excessive CPU use. Route matching occurs before route and group middleware, so authentication or rate-limiting middleware attached to the route may not prevent an unauthenticated request from blocking the Node.js event loop and stopping the worker from serving unrelated requests or health checks. This issue is fixed in versions 8.2.2 and 9.1.1.

Weakness: CWE-400 (Uncontrolled Resource Consumption), CWE-1333 (Inefficient Regular Expression Complexity)

## Which versions are affected by CVE-2026-104150?

4 open source packages ship an affected version, including @adonisjs/http-server.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `@adonisjs/http-server` | npm | All versions | 8.2.2 |
| `@adonisjs/http-server` | npm | All versions | 8.2.2 |
| `@adonisjs/http-server` | npm | From 9.0.0 | 9.1.1 |
| `@adonisjs/http-server` | npm | From 9.0.0 | 9.1.1 |

## How do I fix CVE-2026-104150?

Upgrade @adonisjs/http-server to a fixed version for your release line: 8.2.2 or 9.1.1.

## Is CVE-2026-104150 being exploited?

There is no known exploitation of CVE-2026-104150 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-104150 and fix it if it is affected.

What it is: CVE-2026-104150 is a high-severity denial of service vulnerability in adonisjs http-server, published on 15 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-104150 in the wild and no public exploit code.

Affected packages and fixed versions:
- @adonisjs/http-server (npm): affected all versions; fixed in 8.2.2
- @adonisjs/http-server (npm): affected all versions; fixed in 8.2.2
- @adonisjs/http-server (npm): affected from 9.0.0; fixed in 9.1.1
- @adonisjs/http-server (npm): affected from 9.0.0; fixed in 9.1.1

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-104150/ (Markdown: https://insights.sbomify.com/CVE-2026-104150/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-104150
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-104150
- OSV: https://osv.dev/vulnerability/CVE-2026-104150

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-104150/
Summaries are generated and may contain mistakes; the official description above is the record.