CVE-2022-4647Network attack vector

Stored XSS via unsanitized content

Published Dec 22, 2022 · Updated Apr 9, 2025

Stored cross-site scripting in Microweber before 1.3.2 allows remote attackers to execute script in a victim's browser via crafted content. The content parser and rendering path accepted attacker-controlled markup without effective XSS sanitization; the upstream fix adds XSS-cleaning and parser changes. Exploitation requires content to be stored and later viewed, allowing script execution in the victim's browser context with access bounded by that session.

CVSS severity6.1
Medium
EPSS probability0.49%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored cross-site scripting in Microweber before 1.3.2 allows remote attackers to execute script in a victim's browser via crafted content. The content parser and rendering path accepted attacker-controlled markup without effective XSS sanitization; the upstream fix adds XSS-cleaning and parser changes. Exploitation requires content to be stored and later viewed, allowing script execution in the victim's browser context with access bounded by that session.

The record

CVE
CVE-2022-4647
Published
Dec 22, 2022
Updated
Apr 9, 2025
Vendor
Microweber
Product
Microweber
Classifications
CWE-79, T1565
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 22, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 9, 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?

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

  1. Affected versionversion=unspecified <1.3.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Microweber · Microweberversion=unspecified <1.3.2

Published CVSS scores

6.1[email protected]CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
5.1[email protected]CVSS:3.0/AV:A/AC:H/PR:H/UI:R/S:U/C:H/I:L/A:L

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 exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1565Stored Data Manipulation

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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