This page tracks the BellSoft Alpaquita fix status. The vulnerability itself is described on the main CVE page. View CVE-2026-57585 →
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BELL-CVE-2026-57585

Vulnerability in py3-msgpack (BELL-CVE-2026-57585)

Summary

Vulnerability in py3-msgpack (BELL-CVE-2026-57585). Risk of unauthorized operations or information disclosure. Mitigation: upgrade to 1.0.8-r0 or later.

Auto-generated summary

Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.

A weakness called BELL-CVE-2026-57585 was discovered in py3-msgpack.
Severity is Info. Low severity or not yet rated.
What you should do: update the affected software to the latest version. If unsure, ask your IT team or search the vendor's site for "py3-msgpack BELL-CVE-2026-57585".

BELL-CVE-2026-57585 (py3-msgpack). Severity: Info.
Response plan:

  1. Check the vendor advisory for affected versions and the patched release.
  2. If a vulnerable version is running in production, schedule maintenance (urgency from KEV/CVSS).
  3. If no patch yet, mitigate via WAF rule, disabling the affected feature, etc.
  4. Monitor logs / SIEM for known IOC and PoC signatures of this CVE.
    PoCs and fix commits: see the 'References' section, MITRE, and NVD.
❓ What is the problem

A weakness (BELL-CVE-2026-57585) in py3-msgpack. A serious software flaw has been identified.

📍 Affected scope

Target versions of py3-msgpack (see vendor advisory). If running in production, identify exposure immediately.

🔥 Severity

Severity: Info. Low severity or not yet rated.

🔧 How to fix

Update to the patched release as listed in the vendor advisory.

🛡️ Workaround

If a patch is not yet available, consider disabling the affected feature, applying WAF rules, blocking via network ACLs, or isolating the vulnerable version.

🔍 Detection

Check version information, scan dependencies via SBOM, and monitor SIEM for IOC and PoC signatures related to this CVE.

Affected packages

Alpaquita:23 py3-msgpack
[{"type":"ECOSYSTEM","events":[{"introduced":"1.0.4-r1"},{"fixed":"1.0.8-r0"}]}]
Alpaquita:25 py3-msgpack
[{"type":"ECOSYSTEM","events":[{"introduced":"1.0.8-r1"},{"fixed":"1.0.8-r2"}]}]
Alpaquita:stream py3-msgpack
[{"type":"ECOSYSTEM","events":[{"introduced":"1.0.4-r1"},{"fixed":"1.2.1-r0"}]}]

References

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