CVE-2022-24123Public exploitNetwork attack vector

Command execution via unsanitized Mermaid diagram HTML

Published Jan 29, 2022 · Updated Aug 3, 2024

Mutation XSS in MarkText 0.16.3 and earlier allows context-dependent attackers to execute commands through a crafted Markdown file. The Mermaid preview renderer assigns unsanitized diagram code to target.innerHTML before mermaid.init processes the resulting DOM. A victim must load the crafted file so MarkText renders its Mermaid block; injected JavaScript executes with the victim's application privileges.

CVSS severity9.0
Critical
EPSS probability1.94%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Mutation XSS in MarkText 0.16.3 and earlier allows context-dependent attackers to execute commands through a crafted Markdown file. The Mermaid preview renderer assigns unsanitized diagram code to target.innerHTML before mermaid.init processes the resulting DOM. A victim must load the crafted file so MarkText renders its Mermaid block; injected JavaScript executes with the victim's application privileges.

The record

CVE
CVE-2022-24123
Published
Jan 29, 2022
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-79, T1204.002
Attack vector
network
Privileges
Unavailable

Timeline

How it unfolded

  1. Jan 29, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesUnavailable in this record.

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

9.0NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H
6.8NIST NVDAV:N/AC:M/Au:N/C:P/I:P/A:P

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1204.002User Execution: Malicious File

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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