CVE-2022-33009Public exploitNetwork attack vector

Stored XSS via crafted PDF upload

Published Jun 27, 2022 · Updated Jul 9, 2026

Stored XSS in LightCMS 1.3.11 allows remote authenticated users to execute web scripts in an administrator's browser via a crafted PDF. The article contents workflow stores the uploaded PDF as a clickable link without neutralizing its script-bearing content before delivery. Content-upload privileges and administrator interaction are required; opening the link runs the payload in the site's browser context, exposing accessible data and page content.

CVSS severity4.8
Medium
EPSS probability0.52%
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 LightCMS 1.3.11 allows remote authenticated users to execute web scripts in an administrator's browser via a crafted PDF. The article contents workflow stores the uploaded PDF as a clickable link without neutralizing its script-bearing content before delivery. Content-upload privileges and administrator interaction are required; opening the link runs the payload in the site's browser context, exposing accessible data and page content.

The record

CVE
CVE-2022-33009
Published
Jun 27, 2022
Updated
Jul 9, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-79, T1203
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Jun 27, 2022CVE publishedPublication date reported by the CVE source.
  2. Jul 9, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

3.5NIST NVDAV:N/AC:M/Au:S/C:N/I:P/A:N
4.8NIST NVDCVSS: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 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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