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GHSA-rhh3-jpg6-66xh

MediumCVSS 5.3 / 10
Published Aug 6, 2026·Last modified Aug 6, 2026
Affected Components(0)

No affected components available

Description

Impact

Mermaid radar diagrams allow arbitrary large values for ticks, which can cause high CPU usage, freezing the webpage/JavaScript process for long periods of time, until the process is eventually killed due to OOM/running out of memory.

Proof-of-concept

radar-beta
  axis a, b
  curve c {1, 1}
  ticks 1000000000

Patches

Has the problem been patched? What versions should users upgrade to?

This problem has been patched by https://github.com/mermaid-js/mermaid/commit/59b22fad2b3bb04f87a476c84a8a2b24679e607e, which was released in Mermaid v11.16.1

Workarounds

Is there a way for users to fix or remediate the vulnerability without upgrading?

There are no known workarounds without updating to a patched version of mermaid.

References

Are there any links users can visit to find out more?

  • https://github.com/mermaid-js/mermaid/commit/59b22fad2b3bb04f87a476c84a8a2b24679e607e
  • https://github.com/mermaid-js/mermaid/releases/tag/mermaid%4011.16.1
Risk Scores
Base Score
5.3

The vulnerability can be exploited over the network without needing physical access. It is easy for an attacker to exploit this vulnerability. An attacker does not need any special privileges or access rights.

Threat Intelligence
1.3

Limited exploitation activity has been observed. Close monitoring and planned remediation are recommended.

EPSS
0.39%

The exploit probability is very low. The vulnerability is unlikely to be exploited in the next 30 days.

Exploit
Not available

We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.

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