CVE-2019-17426

Name: CVE-2019-17426
Creator: NVD / NIST
Published: 2019-10-10T02:05:46.833+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.1/10EPSS 1.66%

Last modified Jun 17, 2026

CVE-2019-17426 is a critical-severity vulnerability rated 9.1/10 on the CVSS scale. Automattic Mongoose through 5.7.4 allows attackers to bypass access control (in some applications) because any query object with a _bsontype attribute is ignored. For example, adding "_bsontype":"a" can sometimes interfere with a query filter. EPSS estimates a 1.66% chance of exploitation in the next 30 days.

Description

Automattic Mongoose through 5.7.4 allows attackers to bypass access control (in some applications) because any query object with a _bsontype attribute is ignored. For example, adding "_bsontype":"a" can sometimes interfere with a query filter. NOTE: this CVE is about Mongoose's failure to work around this _bsontype special case that exists in older versions of the bson parser (aka the mongodb/js-bson project).

Metrics

CVSS 3.1

9.1/10

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

EPSS Probability

1.66%

73.7th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Mongoosejs	Mongoose	<= 5.7.4

References

https://github.com/Automattic/mongoose/commit/f3eca5b94d822225c04e96cbeed9f095afb3c31cPatch
https://github.com/Automattic/mongoose/issues/8222Third Party Advisory
https://github.com/Automattic/mongoose/commit/f3eca5b94d822225c04e96cbeed9f095afb3c31cPatch
https://github.com/Automattic/mongoose/issues/8222Third Party Advisory

Timeline

Published: Oct 10, 2019
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-17426?

How severe is CVE-2019-17426?

CVE-2019-17426 has a CVSS score of 9.1/10 (CRITICAL severity). The EPSS model estimates a 1.66% probability of exploitation in the next 30 days.

How do I fix CVE-2019-17426?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2019-17426?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST