Skip to main content
Press slash or control plus K to focus the search. Use the arrow keys to navigate results and press enter to open a threat.
Reconnecting to live updates…

MAL-2026-6800: Malicious code in big-numer (npm)

0
Critical
Published: 07/06/2026 (07/06/2026, 18:50:20 UTC)
Source: GCVE Database
Product: big-numer

Description

The npm package 'big-numer' version 5.0.5 contains malicious code that compromises any computer on which it is installed or running. The compromise is severe enough that all secrets and keys stored on the affected system should be rotated immediately from a different, trusted machine. Removing the package alone does not guarantee removal of all malicious software introduced by this package.

Affected software

npmghsa
big-numer
Affected versions
=5.0.5

Run on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.

AI-Powered Analysis

Machine-generated threat intelligence

AILast updated: 07/06/2026, 23:38:18 UTC

Technical Analysis

The 'big-numer' npm package version 5.0.5 is identified as containing malicious code that fully compromises affected systems. This malicious package grants attackers full control over the compromised computer. Due to the severity of the compromise, all sensitive credentials stored on the system must be considered exposed and rotated from a separate, secure environment. The package removal does not assure complete remediation as additional malicious artifacts may persist.

Potential Impact

Systems with 'big-numer' version 5.0.5 installed are fully compromised, risking exposure of all stored secrets and keys. Attackers may have persistent control beyond the presence of the package itself, leading to potential data theft, unauthorized access, and further system manipulation.

Mitigation Recommendations

Remove the 'big-numer' package version 5.0.5 immediately. Rotate all secrets and keys stored on the compromised system using a different, trusted computer. Because full system compromise is possible, consider rebuilding or thoroughly cleaning the affected system to ensure removal of all malicious components.

Pro Console: star threats, build custom feeds, automate alerts via Slack, email & webhooks.Upgrade to Pro

Technical Details

Gcve Source
db.gcve.eu
Osv Id
MAL-2026-6800
Osv Schema Version
1.7.4
Aliases
["GHSA-j5jp-xc7m-26vm"]
Ecosystems
["npm"]
Database Specific Severity
null
Cvss Version
null

Threat ID: 6a4c344327e9c797195fb5e5

Added to database: 07/06/2026, 23:03:31 UTC

Last enriched: 07/06/2026, 23:38:18 UTC

Last updated: 07/06/2026, 23:38:18 UTC

Views: 2

Community Reviews

0 reviews

Crowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.

Sort by
Loading community insights…

Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.

Actions

PRO

Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.

Please log in to the Console to use AI analysis features.

Need more coverage?

Upgrade to Pro Console for AI refresh and higher limits.

For incident response and remediation, OffSeq services can help resolve threats faster.

Latest Threats

Breach by OffSeqOFFSEQFRIENDS — 25% OFF

Check if your credentials are on the dark web

Instant breach scanning across billions of leaked records. Free tier available.

Scan now
OffSeq TrainingCredly Certified

Lead Pen Test Professional

Technical5-day eLearningPECB Accredited
View courses