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Malicious code in tellyo-colours (npm)

GHSA-4q6x-w65x-677r

What to do

Vendor response not established. Follow the primary source's mitigation guidance and check back for a fix.

This page has no inventory attached, so it cannot say whether you are affected. A vendor fix is not proof that your deployment is fixed.

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Affected packages

  • npm tellyo-colours

    Affected
    every version
    Fixed in
    no fixed version recorded

Sources

Severity and exploitation
Exploitation
No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.
CVSS
not scored
EPSS
No dated EPSS signal available.
Source description

As published by the source; long descriptions are shortened.

--- _-= Per source details. Do not edit below this line.=-_

Source: amazon-inspector (3dcb85c2aba3b12a48393163cde3c6b1d3fa946d4f3745347791ae25ac216b86) tellyo-colours@21.3.1 declares a runtime dependency on `abbishal-poc-as-dependency` with the wildcard version `"*"` in package.json, despite the README stating the package ships no code and no install scripts. On `npm install`, resolution of the wildcard range fetches whichever version the controller of that dependency name currently publishes and executes any lifecycle scripts (preinstall/install/postinstall) shipped in that transitive package. The shipped SCSS contains the canary string `--tostpro-canary: "test by abbishal"`, matching the dependency's author prefix and indicating the two artifacts are coordinated as a dependency-confusion proof-of-concept. The inert nature of the SCSS content and the absence of lifecycle scripts in this package do not mitigate the exposure — the manifest itself is sufficient to pull and run…

Dates and revisions
Published by the source
Last modified by the source
Source last checked
  1. Revision 1 · created ·

    Published from osv record MAL-2026-18115

Agent brief

Preview the exact text before you copy it. Commands are read-only suggestions; review them before running anything.

# Patch Next advisory brief: GHSA-4q6x-w65x-677r

Advisory: Malicious code in tellyo-colours (npm)
IDs: GHSA-4q6x-w65x-677r
Record: https://patchnext.com/advisories/mal-2026-18115 (revision 1, source checked 30 Oct 2026, 06:05 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: Unrated
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor response not established. A vendor fix does not mean a deployment is fixed.

## Affected components
- npm tellyo-colours: affected every version

## Suggested inspection (read-only)
- `npm ls tellyo-colours --all`: lists every installed copy and version, including transitive ones. Run in the project root after `npm ci`.

## Supported action
No complete vendor fix is recorded. Follow the primary source's mitigation guidance and check this record again before closing anything.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on tellyo-colours.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://osv.dev/vulnerability/MAL-2026-18115 (OSV record MAL-2026-18115 lists affected ranges: npm tellyo-colours >=0)

Commands are suggestions: review each one before running it.

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