Answer in brief
CVE-2025-3931 records a High severity (CVSS 7.8) vulnerability in Yggdrasil: local privilege escalation in yggdrasil. The current sources do not mark it as known exploited. The current feed maps yggdrasil (generic), github.com/redhatinsights/yggdrasil (go). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 7.8. 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.
The current feed maps yggdrasil (generic), github.com/redhatinsights/yggdrasil (go). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| yggdrasilgeneric | >=0 <0.4.7 | 0.4.7 |
| github.com/redhatinsights/yggdrasilgo | >=0 | Not reported |
Published upstream
May 14, 2025
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Nov 4, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 7, 2026
A flaw was found in Yggdrasil, which acts as a system broker, allowing the processes to communicate to other children's "worker" processes through the DBus component. Yggdrasil creates a DBus method to dispatch messages to workers. However, it misses authentication and authorization checks, allowing every system user to call it. One available Yggdrasil worker acts as a package manager with capabilities to create and enable new repositories and install or remove packages. This flaw allows an attacker with access to the system to leverage the lack of authentication on the dispatch message to force the Yggdrasil worker to install arbitrary RPM packages. This issue results in local privilege escalation, enabling the attacker to access and modify sensitive system data.
Quoted source text, attributed separately from HOL analysis.