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[NEW] [high] OpenCTI: Vulnerability allows bypassing security measures

high
A remote, anonymous attacker can exploit a vulnerability in OpenCTI to bypass security measures.

CSIRTS triage

vendor: OpenCTIproduct: OpenCTIAuthentication bypass
What
A vulnerability in OpenCTI allows a remote, anonymous attacker to bypass security measures.
Who is affected
Deployments of OpenCTI are affected by this vulnerability.
Urgency
Remediation is urgent due to the high severity of the vulnerability.
Action
Apply the latest security updates for OpenCTI to mitigate this issue.

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
high
Published
2026-07-28
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-2026-2538

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