CVE-2026-6091
CSIRTS triage
- What
- Partial-chain verification accepts untrusted intermediate as trust anchor.
- Who is affected
- Deployments using the affected verification process.
- Urgency
- Remediation is important due to the medium severity and potential trust issues.
- Action
- Review and update verification processes.
AI-assisted analysis generated from the source advisory — verify against the original.
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Exploitation outlook
- Low exploitation risk0.12% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 2% of all EPSS-scored CVEs.
Advisory coverage (1)
- mediumCVE-2026-6091: Partial-chain verification accepts untrusted intermediate as trust anchormsrc · 2026-06-09
External references
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[](https://www.csirts.com/cve/CVE-2026-6091)