CVE-2019-19729: An issue was discovered in the BSON ObjectID (aka bson-objectid) package 1.3.0 for Node.js

Q: How do I fix CVE-2019-19729?

bson-objectid: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Q: Is CVE-2019-19729 being exploited?

CVE-2019-19729 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2019-19729 affect?

CVE-2019-19729 affects bson-objectid. Severity is high (CVSS 7.5). An issue was discovered in the BSON ObjectID (aka bson-objectid) package 1.3.0 for Node.js. ObjectID() allows an attacker to generate a malformed objectid by inserting an additional property to the user-input, because bson-objectid will ret

Q: How urgent is CVE-2019-19729?

Priority 53/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

This week

HIGH 7.5REMOTEDOWNGRADE

CVE-2019-19729 is a high-severity flaw (CVSS 7.5) affecting bson-objectid. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An issue was discovered in the BSON ObjectID (aka bson-objectid) package 1.3.0 for Node.js. ObjectID() allows an attacker to generate a malformed objectid by inserting an additional property to the user-input, because bson-objectid will return early if it detects _bsontype==ObjectID in the user-input object. As a result, objects in arbitrary forms can bypass formatting if they have a valid bsontype.

Why this priority

High severity
Public exploit reference
Remotely exploitable, no login, no user action

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.1% (top 35%)
CISA exploited list	No
Weakness	CWE-670
Published	2019-12-11
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: bson-objectid project

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2019-12-11 20:15 UTCPublished CVE record published
2026-06-17 02:27 UTCUpdated Record last modified

bson-objectid project bson-objectid DOWNGRADE

Affected: 1.3.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.3.0

1. Check installed version

npm ls bson-objectid

2. No fixed release: DOWNGRADE to a release before 1.3.0

npm view bson-objectid versions npm install bson-objectid@"<1.3.0"

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2019-19729?

bson-objectid: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2019-19729 being exploited?

CVE-2019-19729 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2019-19729 affect?

CVE-2019-19729 affects bson-objectid. Severity is high (CVSS 7.5). An issue was discovered in the BSON ObjectID (aka bson-objectid) package 1.3.0 for Node.js. ObjectID() allows an attacker to generate a malformed objectid by inserting an additional property to the user-input, because bson-objectid will ret

How urgent is CVE-2019-19729?

Priority 53/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

Software pages

Node.js vulnerabilities

References

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