High · CVSS 8.8CVE-2026-12977

Org.wildfly.core/wildfly-server: wildfly: rbac bypass in wildfly deployment-operation handlers leads to privilege escalationCVE-2026-12977

Answer in brief

CVE-2026-12977 records a High severity (CVSS 8.8) vulnerability in Org.wildfly.core/wildfly-server: wildfly: rbac bypass in wildfly deployment-operation handlers leads to privilege escalation. The current sources do not mark it as known exploited. The current feed maps Red Hat/wildfly-server (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Nov 9, 2026Updated Nov 9, 2026Source checked Nov 9, 2026First seen by HOL Nov 9, 2026Material review Nov 9, 2026

Upstream Advisory

Key facts

Risk: High · CVSS 8.8
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Not reported

Why this deserves its current priority

CVSS is 8.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Red Hat/wildfly-server (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Red Hat/wildfly-servergeneric	*	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Red Hat/wildfly-server.
Review the reported fix. Source-reported workaround: Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.

Evidence timeline and material changes

Published upstream
Nov 9, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Nov 9, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Nov 9, 2026

Sources and claim methodology

Upstream source description

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.

Quoted source text, attributed separately from HOL analysis.

Package

Affected range

Fixed version

Red Hat/wildfly-servergeneric

Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Red Hat/wildfly-server.

Review the reported fix. Source-reported workaround: Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.

Sources and claim methodology

Upstream source description

Quoted source text, attributed separately from HOL analysis.