CVE-2022-50906Public exploitNetwork attack vector

Stored XSS via unrestricted remote SVG upload

Published Jan 13, 2026 · Updated Jan 13, 2026

Stored XSS in e107 CMS 3.2.1 allows remote authenticated users to execute scripts in a viewer's browser through an uploaded SVG. The e107_admin/image.php media manager accepts a remote SVG URL despite image upload restrictions, saves the file under e107_media, and renders it as an image without neutralizing embedded script. Administrative privileges are required to upload the payload, and script execution requires another user to view the stored SVG.

CVSS severity4.8
Medium
EPSS probability0.42%
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 e107 CMS 3.2.1 allows remote authenticated users to execute scripts in a viewer's browser through an uploaded SVG. The e107_admin/image.php media manager accepts a remote SVG URL despite image upload restrictions, saves the file under e107_media, and renders it as an image without neutralizing embedded script. Administrative privileges are required to upload the payload, and script execution requires another user to view the stored SVG.

The record

CVE
CVE-2022-50906
Published
Jan 13, 2026
Updated
Jan 13, 2026
Vendor
e107
Product
e107
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Jan 13, 2026CVE publishedPublication date reported by the CVE source.
  2. Jan 13, 2026Record 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=3.2.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

e107 · e107version=3.2.1

Published CVSS scores

4.8VulnCheckCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
4.8VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA: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.

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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 exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1059.007Command and Scripting Interpreter: JavaScript

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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