What is CVE-2026-12977?

CVE-2026-12977 is a high-severity vulnerability in Red Hat Fuse 7, classified under Privilege Defined With Unsafe Actions. CVSS score: 8.8/10. Published 2026-11-09.

How severe is CVE-2026-12977?

High severity. CVSS v3 base score is 8.8 out of 10.

Privilege escalation in Red Hat Fuse 7

CVE-2026-12977

A flaw was found in the deployment-operation family of WildFly Core. Certain handlers, such as upload-deployment-url, lack proper sensitivity classification, allowing an administrator with the restricted "Maintainer" role to read sensitive configuration files. This can lead to the exfiltration of credentials and full administrative control (SuperUser) of the server.

Published 2026-11-09 · last modified 2026-11-09.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Weakness classification (CWE)

CWE-267 — Privilege Defined With Unsafe Actions

References

access.redhat.com/security/cve/CVE-2026-12977 (vdb-entry)
bugzilla.redhat.com/show_bug.cgi (issue-tracking)

Frequently asked questions

What is CVE-2026-12977?: CVE-2026-12977 is a high-severity vulnerability in Red Hat Fuse 7, classified under Privilege Defined With Unsafe Actions. CVSS score: 8.8/10. Published 2026-11-09.
How severe is CVE-2026-12977?: High severity. CVSS v3 base score is 8.8 out of 10.