CVE-2022-0542Public exploitNetwork attack vector

Script execution via unsanitized message Markdown

Published Aug 19, 2022 · Updated Aug 2, 2024

DOM-based XSS in Chatwoot before 2.7.0 allows remote attackers to run script in an agent's browser through a crafted chat message. MessageFormatter passes message Markdown to marked() and returns the generated HTML without DOMPurify sanitization, preserving javascript: links. An agent must render and follow the malicious link; successful exploitation executes script in that agent's Chatwoot browser context.

CVSS severity6.1
Medium
EPSS probability0.95%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

DOM-based XSS in Chatwoot before 2.7.0 allows remote attackers to run script in an agent's browser through a crafted chat message. MessageFormatter passes message Markdown to marked() and returns the generated HTML without DOMPurify sanitization, preserving javascript: links. An agent must render and follow the malicious link; successful exploitation executes script in that agent's Chatwoot browser context.

The record

CVE
CVE-2022-0542
Published
Aug 19, 2022
Updated
Aug 2, 2024
Vendor
Chatwoot
Product
Chatwoot
Classifications
CWE-79, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 19, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 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?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=unspecified <2.7.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Chatwoot · Chatwootversion=unspecified <2.7.0

Published CVSS scores

6.1NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
8.8huntr.devCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

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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