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Unratedamended

Malicious code in zagents-message-bus (PyPI)

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

  • PyPI zagents-message-bus

    Affected
    >= 1.0.5, <= 1.0.5>= 1.0.10, <= 1.0.10>= 99.99.99, <= 99.99.99>= 99.99.100, <= 99.99.100
    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 (177a91975e11b9b3afbc5089dfc7e4c4fdae1cb05f8307f397956c675533f0d8) pypi package zagents-message-bus is published at an implausibly inflated version (99.99.100) under an internal-sounding name, consistent with a dependency-confusion resolution-override attempt against a private package of the same name. The shipped main.py defines CALLBACK_URL = "https://webhook.site/b961eb5e-fabc-43a5-83a3-d1509c3a558e" and performs an HTTP GET to that URL with a diagnostic-error query parameter when main() is invoked. The webhook.site endpoint is an anonymous third-party request-logging service typical of dependency-confusion canaries and reconnaissance beacons. The package has no install-time hook (no setup.py side effects, no build-backend network I/O) and the beacon does not fire on bare import — the init re-exports symbols that do not exist in main.py, so `import zagents_message_bus` raises ImportError…

Dates and revisions
Published by the source
Last modified by the source
Source last checked
  1. Revision 2 · amended ·

    Amended from osv record MAL-2026-18296

  2. Revision 1 · created ·

    Published from osv record MAL-2026-18296

Agent brief

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# Patch Next advisory brief: mal-2026-18296

Advisory: Malicious code in zagents-message-bus (PyPI)
IDs: mal-2026-18296
Record: https://patchnext.com/advisories/mal-2026-18296 (revision 2, source checked 30 Oct 2026, 06:40 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
- PyPI zagents-message-bus: affected >= 1.0.5, <= 1.0.5; >= 1.0.10, <= 1.0.10; >= 99.99.99, <= 99.99.99; >= 99.99.100, <= 99.99.100

## Suggested inspection (read-only)
- `python -m pip show zagents-message-bus`: prints the installed version. Run with the environment that serves production active.

## 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 zagents-message-bus.
- 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-2026-18296 (OSV record MAL-2026-18296 lists affected ranges: PyPI zagents-message-bus >=1.0.5 =1.0.10 =99.99.99 =99.99.100 <=99.99.100)

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