What is CVE-2026-8505?

CVE-2026-8505 is a critical-severity vulnerability in Apple macOS, classified under Missing Authentication for Critical Function. CVSS score: 9.8/10. Published 2026-07-17.

How severe is CVE-2026-8505?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Auth bypass in Apple macOS

CVE-2026-8505

IBM Langflow OSS 1.0.0 through 1.10.0 has a vulnerability in Langflow's webhook authentication logic allows unauthenticated users to trigger the execution of any flow. The system incorrectly bypasses API key validation when the WEBHOOK_AUTH_ENABLE configuration is set to False (which is the default setting). This allows a remote attacker who knows a flow's UUID to execute it as if they were the owner, potentially leading to Remote Code Execution (RCE).

Vulnerability class: Broken Authentication

Published 2026-07-17 · last modified 2026-07-23.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.007 (52.9th percentile), scored 2026-10-16.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 53rd percentile — 52.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.006 · newest: 0.007 · change: +0.001

Affected products

Weakness classification (CWE)

CWE-306 — Missing Authentication for Critical Function

References

www.ibm.com/support/pages/node/7278921 (vendor-advisory, patch, Vendor Advisory)

Frequently asked questions

What is CVE-2026-8505?: CVE-2026-8505 is a critical-severity vulnerability in Apple macOS, classified under Missing Authentication for Critical Function. CVSS score: 9.8/10. Published 2026-07-17.
How severe is CVE-2026-8505?: Critical severity. CVSS v3 base score is 9.8 out of 10.