CVE-2026-66679

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

• ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
• AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
• Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.35% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 28.4% of scored records. A rank, not a probability.

NVD base score

6.5 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L

NVD analysis status

Deferred. NVD last modified this record on 2026-10-22.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2026-08-18 13:59Z2 MO AGO

Last updated

2026-08-18 19:48Z2 MO AGO

Reserved

2026-07-27

Assigning CNA

Patchstack

Record state

PUBLISHED

Severity

Medium (CVSS 6.5)

CNA CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L

Weaknesses

• CWE-1284Improper Validation of Specified Quantity in InputBase

Data version

5.2

Document digest

14da1a48d8d220ec82cb1347c7c9e3d0cf30758bb8e7776e313a5ebf553a9841

• patchstack.comhttps://patchstack.com/database/wordpress/plugin/appointment-hour-booking/vulnerability/wordpress-appointment-hour-booking-plugin-1-5-91-broken-access-control-vulnerability?_s_id=cvevdb-entry