CVE-2026-71436
Description
A flaw was found in Mermaid XY Charts. A remote attacker could exploit this by providing invalid parameters when configuring an X-Axis. This could lead to an infinite loop, causing a denial of service (DoS) due to memory exhaustion and potentially crashing the page or JavaScript process.
Statement
Red Hat ships Mermaid (a JavaScript diagramming library) embedded in code-server based developer workbench images: OpenShift AI's odh-workbench-codeserver-datascience-cpu-py312 workbench image and OpenShift Dev Spaces' code-rhel9 image. The bundled version falls within the vulnerable range (>=10.6.0,<10.9.8 or below 11.16.1), exposing users who build interactive XY chart diagrams in the editor to a client-side denial of service (infinite loop / memory exhaustion) triggered by invalid X-Axis parameters. Resolution is delegated to the workbench/Dev Spaces image maintainers to bump the pinned mermaid dependency.
Mitigation
Avoid rendering or previewing untrusted Mermaid diagram content containing XY chart definitions with attacker-controlled X-Axis parameters in the affected workbench images until the pinned mermaid dependency is upgraded to 10.9.8+/11.16.1+.
Common Vulnerability Scoring System (CVSS) Score Details
Info alert:Important note
CVSS scores for open source components depend on vendor-specific factors (e.g. version or build chain). Therefore, Red Hat's score and impact rating can be different from NVD and other vendors. Red Hat remains the authoritative CVE Naming Authority (CNA) source for its products and services (see Red Hat classifications).
The following CVSS metrics and score provided are preliminary and subject to review.
CVSS v3 Score Breakdown
| Red Hat | NVD | cve.org | |
|---|---|---|---|
| Base Score | 7.5 | N/A | N/A |
| Attack Vector | Network | N/A | N/A |
| Attack Complexity | Low | N/A | N/A |
| Privileges Required | None | N/A | N/A |
| User Interaction | None | N/A | N/A |
| Scope | Unchanged | N/A | N/A |
| Confidentiality | None | N/A | N/A |
| Integrity Impact | None | N/A | N/A |
| Availability Impact | High | N/A | N/A |
Vector
Red Hat: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Understanding the Weakness (CWE)
Availability
Technical Impact: DoS: Resource Consumption (CPU); DoS: Resource Consumption (Memory); DoS: Amplification
An infinite loop will cause unexpected consumption of resources, such as CPU cycles or memory. The software's operation may slow down, or cause a long time to respond.
Frequently Asked Questions
Not sure what something means? Check out our Security Glossary.
Want to get errata notifications? Sign up here.
