Packages / qs / Security

HighVulnerabilityGHSA-gqgv-6jq5-jjj9CVE-2017-1000048Published 30 Apr 2020

Prototype Pollution Protection Bypass in qs

Your version

Affected releases · qs

  • 6.x6.0.0 – 6.3.1Fixed in 6.3.2
  • 5.x and older0.0.1 – 5.2.1No fix, no longer updated

On 6.x, the newest line:

npm install qs@6.3.2
Every release on a timeline
6.x

  1. Affected

    6.0.0 – 6.0.3

    4 releases

  2. Fixed

    6.0.4 – 6.0.6

    3 releases

  3. Affected

    6.1.0 – 6.1.1

    2 releases

  4. Fixed

    6.1.2 – 6.1.4

    3 releases

  5. Affected

    6.2.0 – 6.2.2

    3 releases

  6. Fixed

    6.2.3 – 6.2.6

    4 releases

  7. Affected

    6.3.0 – 6.3.1

    2 releases

  8. Fixed

    6.3.2 – 6.17.1

    79 releases, latest

5.x

  1. Affected

    5.0.0 – 5.2.1

    4 releases

4.x

  1. Affected

    4.0.0

    1 release

3.x

  1. Affected

    3.0.0 – 3.1.0

    2 releases

2.x

  1. Affected

    2.0.0 – 2.4.2

    15 releases

1.x

  1. Affected

    1.0.0 – 1.2.2

    7 releases

0.x

  1. Affected

    0.0.1 – 0.6.6

    29 releases

158 stable releases of qs, oldest to newest, one row per major.

What happens

Affected version of qs are vulnerable to Prototype Pollution because it is possible to bypass the protection. The qs.parse function fails to properly prevent an object's prototype to be altered when parsing arbitrary input. Input containing [ or ] may bypass the prototype pollution protection and alter the Object prototype. This allows attackers to override properties that will exist in all objects, which may lead to Denial of Service or Remote Code Execution in specific circumstances.

Recommendation

Upgrade to 6.0.4, 6.1.2, 6.2.3, 6.3.2 or later.