CVE-2019-10805: valib through 2.0.0 allows Internal Property Tampering

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HIGH 7.5REMOTEUPGRADE

CVE-2019-10805 is a high-severity flaw (CVSS 7.5) affecting valib.js. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

valib through 2.0.0 allows Internal Property Tampering. A maliciously crafted JavaScript object can bypass several inspection functions provided by valib. Valib uses a built-in function (hasOwnProperty) from the unsafe user-input to examine an object. It is possible for a crafted payload to overwrite this function to manipulate the inspection results to bypass security checks.

Why this priority

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

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.4% (top 27%)
CISA exploited list	No
Weakness	CWE-668
Published	2020-02-28
Last modified	2026-06-17

Publisher (CNA): Snyk · Vendor: sideralis

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

Am I affected?

Timeline

2020-02-28 21:15 UTCPublished CVE record published
2026-06-17 02:11 UTCUpdated Record last modified

sideralis valib.js UPGRADE

Affected: <= 2.0.0

Fixed in: newer than 2.0.0

Safe to downgrade to: no unaffected older release

1. Check installed version

npm ls valib.js

2. UPGRADE to newer than 2.0.0

npm install valib.js@">2.0.0"

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-2019-10805?

valib.js: upgrade to newer than 2.0.0. Exact commands for each OS are on this page.

Is CVE-2019-10805 being exploited?

CVE-2019-10805 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-2019-10805 affect?

CVE-2019-10805 affects valib.js. Severity is high (CVSS 7.5). valib through 2.0.0 allows Internal Property Tampering. A maliciously crafted JavaScript object can bypass several inspection functions provided by valib. Valib uses a built-in function (hasOwnProperty) from the unsafe user-input to examine

How urgent is CVE-2019-10805?

Priority 55/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

References

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