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[NEW] [medium] OpenCTI: Vulnerability allows bypassing security measures and information disclosure

medium
A remote, anonymous attacker can exploit a vulnerability in OpenCTI to bypass security measures and disclose information.

CSIRTS triage

vendor: OpenCTIproduct: OpenCTIAuthentication bypassInformation disclosure
What
A vulnerability allows a remote, anonymous attacker to bypass security measures and disclose information.
Who is affected
Deployments of OpenCTI.
Urgency
Remediation is medium urgency due to the potential for unauthorized access and information exposure.
Action
Monitor for updates and apply patches as they become available.

AI-assisted analysis generated from the source advisory — verify against the original.

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Details

Source
CERT-Bund (BSI) Security Advisories (DE · national-cert · site)
Severity
medium
Published
2026-07-27
Exploitation
Not in CISA KEV at last sync
Language
Machine-translated to English — verify against the original

Original advisory: https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-2515

Recent advisories for OpenCTI

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

More from CERT-Bund (BSI) Security Advisories