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Advisory record · PYSEC-2025-258

OpenC3 COSMOS before v6.0.2 was discovered to contain hardcoded credentials for the Service Account.

CVSS 9.8 CriticalCriticalEPSS 0.0063 · 50th percentile

Critical, because:

  • CVSS score 9.8: 9.0 or more.

How we decide what’s critical

Published by OSV at 13 Jun 2025, 14:15 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
openc3PyPI<=6.0.0No fixed version yet
Identifiers
PYSEC-2025-258 · CVE-2025-28388
Weakness (CWE)
CWE-798
Tags
Published
13 Jun 2025
Updated
13 Jul 2026

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

OpenC3 COSMOS, as published through the openc3 package, is affected in versions 6.0.0 and earlier. The source gives few details, but it states the software contains hardcoded credentials for its Service Account, which an attacker could use to gain access. No fixed version is listed, so no fix is available from the source.

Written 6 Nov 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

ScoreRatingCVSSVectorSource
9.8 Critical 3.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H OSV
  • CISA KEV Not listed.
  • EPSS 0.0063, the 50th percentile, on 13 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 15:04 UTC First seen by agentprime
  2. 31 Oct 2026, 15:04 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.