mime Regular Expression Denial of Service when MIME lookup performed on untrusted user input

mime Updated 02 Oct 2025

Summary

20/07/2018

Disclosed on

CVE-2017-16138

CVE

Yes i

Fix available

High

Severity

7.5

CVSS Score

CVE-2017-16138: mime Regular Expression Denial of Service when MIME lookup performed on untrusted user input. Affects mime across 2 version ranges.

< 1.4.1 >= 2.0.0, < 2.0.3

Fixed in 1.4.1 or 2.0.3, depending on the release line you run. How to fix ↓

Also tracked for

node-mime · Debian:11

The same CVE-2017-16138 is tracked separately for each ecosystem and vendor. Its fix information is the same; the package and affected versions differ.

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Affected versions of mime are vulnerable to regular expression denial of service when a mime lookup is performed on untrusted user input.

Recommendation

Update to version 2.0.3 or later.

How To Fix

Fixed versions by release line

The minimum fixed version depends on the release line you run.

< 1.4.1 1.4.1
```
npm install mime@1.4.1
```
>= 2.0.0, < 2.0.3 2.0.3
```
npm install mime@2.0.3
```

Tip — Not sure which release line you're on? Vulert can find the fix for the version you are using. Scan free →

References

How To Fix

Fixed versions by release line

The minimum fixed version depends on the release line you run.

< 1.4.1 1.4.1
```
npm install mime@1.4.1
```
>= 2.0.0, < 2.0.3 2.0.3
```
npm install mime@2.0.3
```

Tip — Not sure which release line you're on? Vulert can find the fix for the version you are using. Scan free →

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