CVE-2026-117554

Exploitation

Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.

SSVC decision

Not assessed by CISA

EPSS probability

0.28% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 21.4% of scored records. A rank, not a probability.

NVD base score

5.3 (CVSS v4.0), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

NVD analysis status

Deferred. NVD last modified this record on 2026-10-27.

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

2026-10-27 13:07Z1 DAY AGO

Last updated

2026-10-27 13:07Z1 DAY AGO

Reserved

2026-10-27

Assigning CNA

VulnCheck

Record state

PUBLISHED

Severity

Medium (CVSS 5.3)

CNA CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N

Weaknesses

• CWE-602Client-Side Enforcement of Server-Side SecurityClass

Data version

5.2

Document digest

4c55cff1a27464c244733aa94af2ebbdec0e5101c37fee479a84b7b8bf890bb8

• github.comGitHub Issue #2231https://github.com/Admidio/admidio/issues/2231issue-tracking
• github.comhttps://github.com/Admidio/admidioproduct
• github.comGitHub Security Advisory (GHSA-92g9-59rr-c3qg)https://github.com/Admidio/admidio/security/advisories/GHSA-92g9-59rr-c3qgvendor-advisory
• github.comhttps://github.com/Admidio/admidio/commit/5b0ee3585d2a69a6e85fee00b7b93f3ebc1e44d9patch
• github.comadmidio v5.0.17 Release Noteshttps://github.com/Admidio/admidio/releases/tag/v5.0.17release-notes
• github.comhttps://github.com/Admidio/admidio/blob/v5.0.16/modules/events/events_function.php#L446-L462technical-description
• www.vulncheck.comVulnCheck Advisory: Admidio before 5.0.17 Event Guest Restriction Bypass via events_function.phphttps://www.vulncheck.com/advisories/admidio-before-5.0.17-event-guest-restriction-bypass-via-events-function-phpthird-party-advisory