CVE-2022-45598Public exploitNetwork attack vector

Arbitrary code execution via unescaped fence language

Published Jan 31, 2023 · Updated Mar 27, 2025

Cross-site scripting in Joplin Desktop App before 2.9.17 allows attackers to execute arbitrary code through crafted Markdown. MdToHtml interpolates the code-fence language string unescaped into data-joplin-language and data-joplin-source-open HTML attributes. Rendering a note containing a malicious fence language is required, after which injected event-handler script runs in the desktop application context.

CVSS severity6.1
Medium
EPSS probability0.45%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cross-site scripting in Joplin Desktop App before 2.9.17 allows attackers to execute arbitrary code through crafted Markdown. MdToHtml interpolates the code-fence language string unescaped into data-joplin-language and data-joplin-source-open HTML attributes. Rendering a note containing a malicious fence language is required, after which injected event-handler script runs in the desktop application context.

The record

CVE
CVE-2022-45598
Published
Jan 31, 2023
Updated
Mar 27, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-79, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 31, 2023CVE publishedPublication date reported by the CVE source.
  2. Mar 27, 2025Record 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 privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

6.1NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
6.1CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1203Exploitation for Client Execution

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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