---
title: "GHSA-27r3-jxmh-p828: body-parser vulnerable to Denial of Service via trailing bytes after a compressed request body"
description: "High severity. body-parser vulnerable to Denial of Service via trailing bytes after a compressed request body. Affects body-parser; fixed in 2.4.0."
url: https://inlinr.com/advisories/GHSA-27r3-jxmh-p828
lang: en
---

[Packages](https://inlinr.com/packages) / [body-parser](https://inlinr.com/packages/body-parser) / [Security](https://inlinr.com/packages/body-parser/security)

High Vulnerability GHSA-27r3-jxmh-p828 CVE-2026-111181 Published 23 Oct 2026

# body-parser vulnerable to Denial of Service via trailing bytes after a compressed request body

Your version 

Affected releases · [body-parser](https://inlinr.com/packages/body-parser)

- 2.x 2.0.0 – 2.3.0 Fixed in 2.4.0
- 1.x 1.0.0 – 1.20.8 Fixed in 1.20.9

On 2.x, the newest line:

```
npm install body-parser@2.4.0
```

Every release on a timeline

2.x 

1. Affected

2.0.0 – 2.3.0  
8 releases
2. Fixed

2.4.0  
1 release, latest

1.x 

1. Affected

1.0.0 – 1.20.8  
75 releases
2. Fixed

1.20.9  
1 release

85 stable releases of body-parser, oldest to newest, one row per major.

## What happens

Impact

A single request can crash any application using `body-parser` with default options. When a request carries a `Content-Encoding` (for example `gzip`), `body-parser` pipes it into a decompression stream and, after reading the body, leaves that stream piped with no error listener. A payload of one valid compressed frame followed by trailing bytes decodes and the application responds normally, but the trailing bytes then reach the already-finished decoder, which emits an error that is re-thrown as an uncaught exception and terminates the process. No authentication or matching route is required, since parsing runs before routing.

Patches

Fixed in body-parser 2.4.0 and 1.20.9\. Upgrade to one of these versions.

Workarounds

Pass `inflate: false` to the body-parser middleware if the application does not need to accept compressed request bodies. This rejects encoded requests before any decompression stream is created.

## How it is exploited

Exploitable over the network, with no account and no action from a user.

- **Confidentiality**: none
- **Integrity**: none
- **Availability**: high

CVSS:3.1/​AV:N/​AC:L/​PR:N/​UI:N/​S:U/​C:N/​I:N/​A:H

## References

- [Reference](https://github.com/expressjs/body-parser/security/advisories/GHSA-27r3-jxmh-p828 "https://github.com/expressjs/body-parser/security/advisories/GHSA-27r3-jxmh-p828")  
github.com/expressjs/body-parser/security/advis…
- [NVD](https://nvd.nist.gov/vuln/detail/CVE-2026-111181 "https://nvd.nist.gov/vuln/detail/CVE-2026-111181")  
nvd.nist.gov/vuln/detail/CVE-2026-111181
- [Fix commit](https://github.com/expressjs/body-parser/commit/1260c3845f54502a05a87594f09a334786bb34d7 "https://github.com/expressjs/body-parser/commit/1260c3845f54502a05a87594f09a334786bb34d7")  
1260c38
- [Fix commit](https://github.com/expressjs/body-parser/commit/f7075eae3a84c3473ab4bf0a777da28db208e916 "https://github.com/expressjs/body-parser/commit/f7075eae3a84c3473ab4bf0a777da28db208e916")  
f7075ea
- [Reference](https://cna.openjsf.org/security-advisories.html "https://cna.openjsf.org/security-advisories.html")  
cna.openjsf.org/security-advisories.html
- [Package](https://github.com/expressjs/body-parser "https://github.com/expressjs/body-parser")  
github.com/expressjs/body-parser
- [Reference](https://github.com/expressjs/body-parser/releases/tag/1.20.9 "https://github.com/expressjs/body-parser/releases/tag/1.20.9")  
github.com/expressjs/body-parser/releases/tag/1…
- [Reference](https://github.com/expressjs/body-parser/releases/tag/v2.4.0 "https://github.com/expressjs/body-parser/releases/tag/v2.4.0")  
github.com/expressjs/body-parser/releases/tag/v…