CVE-2026-42087
SQL injection in COSMOS TSDB enables arbitrary SQL execution (pre-7.0.0-rc3)
Is CVE-2026-42087 being exploited?
Not confirmed. CVE-2026-42087 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.32% probability of exploitation in the next 30 days.
How severe is CVE-2026-42087?
CVE-2026-42087 is rated Critical with a CVSS score of 9.6. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-42087?
Yes. A fix has been recorded for CVE-2026-42087. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-42087 affect?
CVE-2026-42087 affects OpenC3 COSMOS TSDB (6.7.0 - <7.0.0-rc3). Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-42087?
Upgrade to 7.0.0-rc3 or newer
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
SQLi via tsdb_lookup allows arbitrary SQL execution, data deletion/alteration, potential DB compromise
Immediate action required
- affected>= 6.7.0 and < 7.0.0-rc3
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.