CVE-2023-37299Public exploitNetwork attack vector

Script execution via unsanitized image-map AREA href

Published Jun 30, 2023 · Updated Nov 27, 2024

Cross-site scripting in Joplin before 2.11.5 allows remote attackers to execute JavaScript through a crafted image-map AREA element. The HTML sanitizer in packages/renderer/htmlUtils.ts validates href attributes only on A tags, leaving javascript URLs in AREA elements unchanged. Execution requires a user to open an attacker-supplied note and activate its image-map area, after which the script runs in the application's rendering context.

CVSS severity6.1
Medium
EPSS probability0.57%
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 before 2.11.5 allows remote attackers to execute JavaScript through a crafted image-map AREA element. The HTML sanitizer in packages/renderer/htmlUtils.ts validates href attributes only on A tags, leaving javascript URLs in AREA elements unchanged. Execution requires a user to open an attacker-supplied note and activate its image-map area, after which the script runs in the application's rendering context.

The record

CVE
CVE-2023-37299
Published
Jun 30, 2023
Updated
Nov 27, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-79, T1204.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 30, 2023CVE publishedPublication date reported by the CVE source.
  2. Nov 27, 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 privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

6.1NIST National Vulnerability DatabaseCVSS: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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 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')
T1204.001User Execution: Malicious Link

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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