CVE-2022-2495Network attack vector

Stored script execution via unsanitized SVG uploads

Published Jul 22, 2022 · Updated Aug 3, 2024

Stored XSS in Microweber before 1.2.21 allows remote authenticated users to execute scripts through crafted SVG uploads. The SVG upload path in plupload.php marked an SVG as valid even when its sanitizer failed, preserving attacker-controlled active content in the served file. Administrative privileges and victim interaction are required; script execution can read or modify data available to the victim's browser session.

CVSS severity6.8
Medium
EPSS probability0.67%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in Microweber before 1.2.21 allows remote authenticated users to execute scripts through crafted SVG uploads. The SVG upload path in plupload.php marked an SVG as valid even when its sanitizer failed, preserving attacker-controlled active content in the served file. Administrative privileges and victim interaction are required; script execution can read or modify data available to the victim's browser session.

The record

CVE
CVE-2022-2495
Published
Jul 22, 2022
Updated
Aug 3, 2024
Vendor
Microweber
Product
Microweber
Classifications
CWE-79, T1203
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Jul 22, 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?

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

  1. Affected versionversion=unspecified <1.2.21

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Microweber · Microweberversion=unspecified <1.2.21

Published CVSS scores

6.8huntr.dev CNACVSS:3.0/AV:N/AC:H/PR:H/UI:R/S:C/C:H/I:L/A:L
4.8GitHub Advisory DatabaseCVSS:3.1/AV:N/AC:L/PR:H/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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

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

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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